diff --git a/DocuMentor.wxs b/DocuMentor.wxs
index f98cf1c..b41347f 100644
--- a/DocuMentor.wxs
+++ b/DocuMentor.wxs
@@ -4,7 +4,7 @@
   <!-- Paket-Definition (ersetzt Product in v4) -->
   <Package 
     Name="DocuMentor" 
-    Version="1.4.1"
+    Version="1.5.0"
     Manufacturer="Vitali Graf / Software- und Datenbankentwicklung" 
     UpgradeCode="F498B66C-726D-44AA-95F4-CB4FBDCEF26E"
     Language="1031"
diff --git a/THIRD_PARTY_LICENSES.txt b/THIRD_PARTY_LICENSES.txt
index 133cad8..e2687c1 100644
--- a/THIRD_PARTY_LICENSES.txt
+++ b/THIRD_PARTY_LICENSES.txt
@@ -253,5 +253,5 @@ HINWEISE
 
 ================================================================================
 Stand: April 2026
-Erstellt für: DocuMentor v1.4.1
+Erstellt für: DocuMentor v1.5.0
 ================================================================================
diff --git a/installer.iss b/installer.iss
index fd8106c..45739ea 100644
--- a/installer.iss
+++ b/installer.iss
@@ -10,7 +10,7 @@
 ; Build-Befehl: iscc installer.iss
 
 #define MyAppName "DocuMentor"
-#define MyAppVersion "1.4.1"
+#define MyAppVersion "1.5.0"
 #define MyAppPublisher "Ihr Name/Organisation"
 #define MyAppURL "https://github.com/yourusername/xsl-validator"
 #define MyAppExeName "DocuMentor.exe"
diff --git a/pyproject.toml b/pyproject.toml
index 2e2f958..3af9548 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "DocuMentor"
-version = "1.4.1"
+version = "1.5.0"
 description = "Professionelle XSL-Transformations-Verwaltung und PDF-Generierung"
 readme = "README.md"
 license = {text = "MIT"}
diff --git a/src/ui/MainWinddow.ui b/src/ui/MainWinddow.ui
index 10434c8..1588a2b 100644
--- a/src/ui/MainWinddow.ui
+++ b/src/ui/MainWinddow.ui
@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>1263</width>
-    <height>774</height>
+    <height>779</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -100,7 +100,7 @@ QTreeWidget::item:selected {
 }</string>
           </property>
           <property name="columnCount">
-           <number>3</number>
+           <number>2</number>
           </property>
           <attribute name="headerHighlightSections">
            <bool>true</bool>
@@ -118,11 +118,6 @@ QTreeWidget::item:selected {
             <string notr="true">2</string>
            </property>
           </column>
-          <column>
-           <property name="text">
-            <string notr="true">3</string>
-           </property>
-          </column>
          </widget>
         </item>
        </layout>
@@ -149,7 +144,7 @@ QTreeWidget::item:selected {
           <x>0</x>
           <y>0</y>
           <width>68</width>
-          <height>728</height>
+          <height>733</height>
          </rect>
         </property>
         <layout class="QVBoxLayout" name="verticalLayout_2">
@@ -385,8 +380,8 @@ QTreeWidget::item:selected {
             <rect>
              <x>0</x>
              <y>0</y>
-             <width>880</width>
-             <height>697</height>
+             <width>892</width>
+             <height>702</height>
             </rect>
            </property>
            <layout class="QVBoxLayout" name="verticalLayout_3">
diff --git a/src/ui/MainWinddow_ui.py b/src/ui/MainWinddow_ui.py
index c07df68..226a58a 100644
--- a/src/ui/MainWinddow_ui.py
+++ b/src/ui/MainWinddow_ui.py
@@ -91,7 +91,6 @@ class Ui_MainWindow(object):
 
         self.treeWidget = QTreeWidget(self.frame)
         __qtreewidgetitem = QTreeWidgetItem()
-        __qtreewidgetitem.setText(2, u"3");
         __qtreewidgetitem.setText(1, u"2");
         __qtreewidgetitem.setText(0, u"1");
         self.treeWidget.setHeaderItem(__qtreewidgetitem)
@@ -109,7 +108,7 @@ class Ui_MainWindow(object):
 "	background-color: palette(highlight);\n"
 "	color: palette(highlighted-text);\n"
 "}")
-        self.treeWidget.setColumnCount(3)
+        self.treeWidget.setColumnCount(2)
         self.treeWidget.header().setHighlightSections(True)
         self.treeWidget.header().setStretchLastSection(True)
 
diff --git a/src/ui/MainWindow.py b/src/ui/MainWindow.py
index b165470..ef693bb 100644
--- a/src/ui/MainWindow.py
+++ b/src/ui/MainWindow.py
@@ -586,7 +586,7 @@ class MainWindow(
             if expected_pdf.exists():
                 # Icon setzen
                 icon_widget = self._create_centered_diff_icon(xml_path, xsl_id_str)
-                self.ui.treeWidget.setItemWidget(tree_item, 2, icon_widget)
+                self.ui.treeWidget.setItemWidget(tree_item, 1, icon_widget)
                 icon_count += 1
                 logger.debug(f"Diff-Icon für existierende PDF gesetzt: {map_key}")
 
@@ -755,9 +755,9 @@ class MainWindow(
             map_key = f"{xml_relative_path}|{xsl_id_str}"
             if map_key in self.xml_item_map:
                 tree_item = self.xml_item_map[map_key]
-                # Entferne Icon-Widget aus Spalte 2
-                tree_item.setData(2, Qt.ItemDataRole.UserRole, None)
-                self.ui.treeWidget.setItemWidget(tree_item, 2, None)
+                # Entferne Icon-Widget aus Spalte 1
+                tree_item.setData(1, Qt.ItemDataRole.UserRole, None)
+                self.ui.treeWidget.setItemWidget(tree_item, 1, None)
 
             logger.info(f"Änderungen akzeptiert für: {pdf_basename}")
             return True
@@ -904,9 +904,9 @@ class MainWindow(
             map_key = f"{self.current_diff_xml_path}|{self.current_diff_xsl_id}"
             if map_key in self.xml_item_map:
                 tree_item = self.xml_item_map[map_key]
-                # Entferne Icon-Widget aus Spalte 2
-                tree_item.setData(2, Qt.ItemDataRole.UserRole, None)
-                self.ui.treeWidget.setItemWidget(tree_item, 2, None)
+                # Entferne Icon-Widget aus Spalte 1
+                tree_item.setData(1, Qt.ItemDataRole.UserRole, None)
+                self.ui.treeWidget.setItemWidget(tree_item, 1, None)
                 logger.info(f"Diff-Icon entfernt für: {map_key}")
 
             # Diff-PDF-Anzahl auf übergeordneten Ebenen aktualisieren
diff --git a/src/ui/XslFileEditDialog.py b/src/ui/XslFileEditDialog.py
index f0c4a42..685f094 100644
--- a/src/ui/XslFileEditDialog.py
+++ b/src/ui/XslFileEditDialog.py
@@ -7,3 +7,10 @@ class XslFileEditDialog(XsltParamsEditDialog):
 
     def _create_ui(self):
         return Ui_XslFileEditDialog()
+
+    def _load_data(self):
+        """Lädt die Daten des XslFile-Knotens in den Dialog."""
+        if not self.node:
+            return
+        self.ui.xslFileValueLabel.setText(str(self.node.xsl_file) if self.node.xsl_file else "")
+        super()._load_data()
diff --git a/src/ui/XslFileEditDialog.ui b/src/ui/XslFileEditDialog.ui
index c561cc4..4eb6d48 100644
--- a/src/ui/XslFileEditDialog.ui
+++ b/src/ui/XslFileEditDialog.ui
@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>865</width>
-    <height>400</height>
+    <height>403</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -23,13 +23,30 @@
       <enum>QLayout::SizeConstraint::SetMaximumSize</enum>
      </property>
      <item row="0" column="0">
+      <widget class="QLabel" name="xslFileLabel">
+       <property name="text">
+        <string>XSL-Datei:</string>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="1">
+      <widget class="QLabel" name="xslFileValueLabel">
+       <property name="text">
+        <string/>
+       </property>
+       <property name="textInteractionFlags">
+        <set>Qt::TextInteractionFlag::TextSelectableByMouse</set>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="0">
       <widget class="QLabel" name="bezLabel">
        <property name="text">
         <string>Bezeichnung:</string>
        </property>
       </widget>
      </item>
-     <item row="0" column="1">
+     <item row="1" column="1">
       <widget class="QLineEdit" name="bezEdit"/>
      </item>
     </layout>
diff --git a/src/ui/XslFileEditDialog_ui.py b/src/ui/XslFileEditDialog_ui.py
index 3987e21..9d5e3b8 100644
--- a/src/ui/XslFileEditDialog_ui.py
+++ b/src/ui/XslFileEditDialog_ui.py
@@ -33,15 +33,26 @@ class Ui_XslFileEditDialog(object):
         self.formLayout = QFormLayout()
         self.formLayout.setObjectName(u"formLayout")
         self.formLayout.setSizeConstraint(QLayout.SizeConstraint.SetMaximumSize)
+        self.xslFileLabel = QLabel(XslFileEditDialog)
+        self.xslFileLabel.setObjectName(u"xslFileLabel")
+
+        self.formLayout.setWidget(0, QFormLayout.ItemRole.LabelRole, self.xslFileLabel)
+
+        self.xslFileValueLabel = QLabel(XslFileEditDialog)
+        self.xslFileValueLabel.setObjectName(u"xslFileValueLabel")
+        self.xslFileValueLabel.setTextInteractionFlags(Qt.TextInteractionFlag.TextSelectableByMouse)
+
+        self.formLayout.setWidget(0, QFormLayout.ItemRole.FieldRole, self.xslFileValueLabel)
+
         self.bezLabel = QLabel(XslFileEditDialog)
         self.bezLabel.setObjectName(u"bezLabel")
 
-        self.formLayout.setWidget(0, QFormLayout.ItemRole.LabelRole, self.bezLabel)
+        self.formLayout.setWidget(1, QFormLayout.ItemRole.LabelRole, self.bezLabel)
 
         self.bezEdit = QLineEdit(XslFileEditDialog)
         self.bezEdit.setObjectName(u"bezEdit")
 
-        self.formLayout.setWidget(0, QFormLayout.ItemRole.FieldRole, self.bezEdit)
+        self.formLayout.setWidget(1, QFormLayout.ItemRole.FieldRole, self.bezEdit)
 
 
         self.verticalLayout.addLayout(self.formLayout)
@@ -151,6 +162,8 @@ class Ui_XslFileEditDialog(object):
 
     def retranslateUi(self, XslFileEditDialog):
         XslFileEditDialog.setWindowTitle(QCoreApplication.translate("XslFileEditDialog", u"XSL-Datei bearbeiten", None))
+        self.xslFileLabel.setText(QCoreApplication.translate("XslFileEditDialog", u"XSL-Datei:", None))
+        self.xslFileValueLabel.setText("")
         self.bezLabel.setText(QCoreApplication.translate("XslFileEditDialog", u"Bezeichnung:", None))
         self.xsltParamsGroupBox.setTitle(QCoreApplication.translate("XslFileEditDialog", u"XSLT-Parameter", None))
         ___qtablewidgetitem = self.xsltParamsTable.horizontalHeaderItem(0)
diff --git a/src/ui/mixins/transformation.py b/src/ui/mixins/transformation.py
index d954640..6f8fcba 100644
--- a/src/ui/mixins/transformation.py
+++ b/src/ui/mixins/transformation.py
@@ -227,7 +227,7 @@ class TransformationMixin:
 
     def _update_diff_pdf_counts_recursive(self, tree_item: QTreeWidgetItem):
         """
-        Aktualisiert rekursiv die Diff-PDF-Anzahl in Spalte 2 für alle TreeNode und XslFile Items.
+        Aktualisiert rekursiv die Diff-PDF-Anzahl in Spalte 1 für alle TreeNode und XslFile Items.
 
         Args:
             tree_item: Das TreeWidgetItem (kann Root oder beliebiger Knoten sein)
@@ -237,7 +237,7 @@ class TransformationMixin:
         # Aktualisiere nur für TreeNode und XslFile, nicht für XmlFile
         if isinstance(node, (TreeNode, XslFile)):
             count = self._count_diff_pdfs_under_node(node, tree_item)
-            tree_item.setText(2, str(count) if count > 0 else "")
+            tree_item.setText(1, str(count) if count > 0 else "")
 
         # Rekursiv für alle Kinder
         for i in range(tree_item.childCount()):
@@ -614,11 +614,11 @@ class TransformationMixin:
             self.ui.treeWidget.scrollToItem(tree_item)
 
             # Entferne vorhandenes Widget (falls Icon vorhanden)
-            self.ui.treeWidget.removeItemWidget(tree_item, 2)
+            self.ui.treeWidget.removeItemWidget(tree_item, 1)
 
             # Erstelle und setze Progress Bar
             progress_widget, progress_bar = self._create_centered_progress_bar()
-            self.ui.treeWidget.setItemWidget(tree_item, 2, progress_widget)
+            self.ui.treeWidget.setItemWidget(tree_item, 1, progress_widget)
 
             logger.debug(f"Progress Bar für {xml_file_name} gesetzt und Eltern-Knoten geöffnet")
         else:
@@ -659,7 +659,7 @@ class TransformationMixin:
                 self, "Transformation fehlgeschlagen", f"XML-Datei: {xml_file}\n\nFehler:\n{error_text}"
             )
 
-        # Update Widget in Spalte 2: Entferne Progress Bar, zeige Icon wenn Diff-PDF existiert
+        # Update Widget in Spalte 1: Entferne Progress Bar, zeige Icon wenn Diff-PDF existiert
         xml_file_str = result.get("xml_file", "")
         xsl_id = result.get("xsl_id", None)
         xsl_id_str = "_".join(str(x) for x in xsl_id) if xsl_id else ""
@@ -669,13 +669,13 @@ class TransformationMixin:
 
         if tree_item:
             # Entferne Progress Bar
-            self.ui.treeWidget.removeItemWidget(tree_item, 2)
+            self.ui.treeWidget.removeItemWidget(tree_item, 1)
 
             # Wenn Diff-PDF existiert, zeige Icon
             if diff_pdf_str and Path(diff_pdf_str).exists():
                 xml_file_path = Path(xml_file_str)
                 icon_widget = self._create_centered_diff_icon(xml_file_path, xsl_id_str)
-                self.ui.treeWidget.setItemWidget(tree_item, 2, icon_widget)
+                self.ui.treeWidget.setItemWidget(tree_item, 1, icon_widget)
                 logger.debug(f"Diff-Icon für {xml_file_str} gesetzt")
             else:
                 logger.debug(f"Keine Diff-PDF für {xml_file_str}, kein Icon gesetzt")
@@ -699,7 +699,7 @@ class TransformationMixin:
         map_key = f"{xml_file_name}|{xsl_id_str}"
         tree_item = self.xml_item_map.get(map_key)
         if tree_item:
-            self.ui.treeWidget.removeItemWidget(tree_item, 2)
+            self.ui.treeWidget.removeItemWidget(tree_item, 1)
             logger.debug(f"Progress Bar für {map_key} entfernt (Fehler)")
 
     def _on_all_transformations_finished(self, successful_count: int, total_count: int, total_duration: float):
diff --git a/src/ui/mixins/tree_manager.py b/src/ui/mixins/tree_manager.py
index 33034b8..9be7261 100644
--- a/src/ui/mixins/tree_manager.py
+++ b/src/ui/mixins/tree_manager.py
@@ -120,7 +120,7 @@ class TreeManagerMixin:
             if node_type == ItemType.XML_FILE:
                 # Hole XmlFile-Objekt und XSL-ID aus UserRole
                 xml_file_obj = item.data(0, Qt.ItemDataRole.UserRole)
-                xsl_id_str = item.data(1, Qt.ItemDataRole.UserRole)
+                xsl_id_str = item.data(0, Qt.ItemDataRole.UserRole + 2)
 
                 logger.debug(f"XML-File-Daten: xml_file_obj={xml_file_obj}, xsl_id_str={xsl_id_str}")
 
@@ -630,12 +630,7 @@ class TreeManagerMixin:
                     xsl_icon = QIcon.fromTheme("text-x-generic")
                 item.setIcon(0, xsl_icon)
 
-            # Setze zusätzliche Informationen in Spalte 1
             if isinstance(node, TreeNode):
-                # TreeNode: Zeige Anzahl der Knoten
-                child_count = len(node.children) if node.children else 0
-                item.setText(1, f"{child_count} Knoten")
-
                 # Speichere zusätzlich die Node-ID in UserRole+1 für Kompatibilität
                 item.setData(0, Qt.ItemDataRole.UserRole + 1, node.id)
 
@@ -646,22 +641,19 @@ class TreeManagerMixin:
                         child_item = self._create_tree_item_from_node(child)
                         item.addChild(child_item)
 
-                # Setze Diff-PDF-Anzahl in Spalte 2 (wird später aktualisiert)
+                # Setze Diff-PDF-Anzahl in Spalte 1
                 diff_count = self._count_diff_pdfs_under_node(node, item)
                 if diff_count > 0:
-                    item.setText(2, str(diff_count))
+                    item.setText(1, str(diff_count))
 
             elif isinstance(node, XslFile):
-                # XslFile: Zeige XSL-Datei-Pfad
-                item.setText(1, str(node.xsl_file))
-
                 # Speichere zusätzlich die Node-ID in UserRole+1 für Kompatibilität
                 item.setData(0, Qt.ItemDataRole.UserRole + 1, node.id)
 
-                # Setze Diff-PDF-Anzahl in Spalte 2 (wird später aktualisiert)
+                # Setze Diff-PDF-Anzahl in Spalte 1
                 diff_count = self._count_diff_pdfs_under_node(node, item)
                 if diff_count > 0:
-                    item.setText(2, str(diff_count))
+                    item.setText(1, str(diff_count))
 
                 # Prüfe ob XSL-Datei existiert
                 xsl_file_missing = False
@@ -689,15 +681,14 @@ class TreeManagerMixin:
                     for xml in node.xmls:
                         xml_item = QTreeWidgetItem()
                         xml_item.setText(0, f"XML: {xml.xml.name}")
-                        xml_item.setText(1, str(xml.xml))
 
                         # Speichere auch das XmlFile-Objekt für XML-Items
                         xml_item.setData(0, Qt.ItemDataRole.UserRole, xml)
                         xml_item.setData(0, Qt.ItemDataRole.UserRole + 1, f"xml_{xml.xml.name}")
 
-                        # Speichere XSL-ID in Spalte 1, UserRole für einfachen Zugriff
+                        # Speichere XSL-ID in Spalte 0, UserRole+2 für einfachen Zugriff
                         xsl_id_str = "_".join(str(x) for x in node.id)
-                        xml_item.setData(1, Qt.ItemDataRole.UserRole, xsl_id_str)
+                        xml_item.setData(0, Qt.ItemDataRole.UserRole + 2, xsl_id_str)
 
                         # Setze XML-Icon
                         xml_icon = QIcon.fromTheme("text-xml")
@@ -736,7 +727,7 @@ class TreeManagerMixin:
             # Fallback: Erstelle einfaches Item
             fallback_item = QTreeWidgetItem()
             fallback_item.setText(0, "Fehler beim Laden")
-            fallback_item.setText(1, str(e))
+            fallback_item.setToolTip(0, str(e))
             return fallback_item
 
     def _create_centered_progress_bar(self) -> tuple[QWidget, QProgressBar]:
diff --git a/uv.lock b/uv.lock
index b06a450..d245999 100644
--- a/uv.lock
+++ b/uv.lock
@@ -34,7 +34,7 @@ wheels = [
 
 [[package]]
 name = "documentor"
-version = "1.4.1"
+version = "1.5.0"
 source = { virtual = "." }
 dependencies = [
     { name = "connectorx" },