diff --git a/lib/editor.tcl b/lib/editor.tcl
index b92dfe6..df01414 100644
--- a/lib/editor.tcl
+++ b/lib/editor.tcl
@@ -1515,6 +1515,7 @@ namespace eval Editor {
             ICO
             XPM
         }
+        # puts "$itemName"
         set fr $itemName
         if ![string match "*untitled*" $itemName] {
              set lblText $fileFullPath
diff --git a/lib/files.tcl b/lib/files.tcl
index ee0600a..d09afb3 100644
--- a/lib/files.tcl
+++ b/lib/files.tcl
@@ -395,6 +395,7 @@ namespace eval FileOper {
     
     proc Edit {fileFullPath {nbEditor .frmWork.nbEditor}} {
         global tree
+        puts "$fileFullPath"
         if {[file exists $fileFullPath] == 0} {
             return false
         } else {
@@ -414,7 +415,9 @@ namespace eval FileOper {
         }
         set filePath [file dirname $fileFullPath]
         set fileName [file tail $fileFullPath]
-        regsub -all {\.|/|\\|\s} $fileFullPath "_" itemName
+        
+        regsub -all {\.|/|\\|\s|:} $fileFullPath "_" itemName
+        set itemName [string tolower $itemName]
         set itemName "$nbEditor.$itemName"
         set treeItemName [Tree::InsertItem $tree {} $fileFullPath "file" $fileName]
         
@@ -437,6 +440,7 @@ namespace eval FileOper {
         focus -force $itemName.frmText.t.t
         .frmStatus.lblSize configure -text [GetFileAttr $fileFullPath "size"]
         .frmStatus.lblEncoding configure -text [GetFileMimeType $fileFullPath "charset"]
+        puts ">> $itemName"
         return $itemName
     }
     
diff --git a/lib/notebook.tcl b/lib/notebook.tcl
index af24975..3c9f9e6 100644
--- a/lib/notebook.tcl
+++ b/lib/notebook.tcl
@@ -13,7 +13,9 @@ namespace eval NB {
     proc InsertItem {nb item type} {
         switch $type {
             file {
-                regsub -all {\.|/|\\|\s} $item "_" itemName
+                set item [string tolower $item]
+                regsub -all {\.|/|\\|\s|:} $item "_" itemName
+                # puts "$item -> $itemName"
                 if [winfo exists $nb.$itemName] {
                     set fm $nb.$itemName
                 } else {
diff --git a/lib/tree.tcl b/lib/tree.tcl
index 35ada20..2ff8bc8 100644
--- a/lib/tree.tcl
+++ b/lib/tree.tcl
@@ -18,7 +18,8 @@ namespace eval Tree {
         # puts "$tree $parent $item $type $text"
         switch $type  {
             file {
-                regsub -all {\.|/|\\|\s} $item "_" subNode
+                regsub -all {\.|/|\\|\s|:} $item "_" subNode
+                set subNode [string tolower $subNode]
                 # puts "Inserted tree node: $subNode"
                 set fileExt [string trimleft [file extension $text] "."]
                 #set fileName [string trimleft [file extension $text] "."]
@@ -41,7 +42,8 @@ namespace eval Tree {
                 }
             }
             directory {
-                regsub -all {\.|/|\\|\s} $item "_" subNode
+                regsub -all {\.|/|\\|\s|:} $item "_" subNode
+                set subNode [string tolower $subNode]
                 # puts $subNode
                 if {[string match {*debian*} [string tolower [file tail $item]]]} {
                     set image [::FindImage debian]
@@ -104,7 +106,7 @@ namespace eval Tree {
         set key [lindex [split $id "::"] 0]
         if {$values eq "" || $key eq ""} {return}
         
-        # puts "$key $tree $values"
+        puts "$key $tree $values"
         switch -regexp $key {
             directory {
                 FileOper::ReadFolder  $values
@@ -112,6 +114,7 @@ namespace eval Tree {
             }
             file {
                 set v [FileOper::Edit $values $nbEditor]
+                puts $v
                 if {$v eq false} {
                     $tree delete $id
                 }