diff --git a/U3H_appStart.ahk b/U3H_appStart.ahk
index 3d15154..5bdbb51 100644
--- a/U3H_appStart.ahk
+++ b/U3H_appStart.ahk
@@ -30,6 +30,14 @@ IfNotExist %U3_APP_DATA_PATH%\%LSn%\%LADn%
 }
 
 SetWorkingDir %U3_HOST_EXEC_PATH%
+
+Loop %runsta0%
+{
+  CurCmd := runsta%A_Index%
+  CurCmd := EnvParseStr(CurCmd)
+  RunWait %CurCmd%
+}
+
 cmdl := AppExe
 Loop %0%
 {
diff --git a/U3H_appStop.ahk b/U3H_appStop.ahk
index 7a62482..9d0453b 100644
--- a/U3H_appStop.ahk
+++ b/U3H_appStop.ahk
@@ -1,7 +1,7 @@
 ASOnExit:
 
 StepsAll = 1
-If (StrLen(RunBeforeStop) > 0)
+If runstp0 > 0
   StepsAll++
 StepsStep := 100/StepsAll
 StepsPos = 0
@@ -9,13 +9,15 @@ StepsPos = 0
 Progress b2 x%PL% y%PT% w%PW% m FM%PFM% FS%PFS%, U3Helper %U3HVer% - (c)2006-2007 Markus Birth <mbirth@webwriters.de>, Stopping %AppName% ..., AHKProgress-%AppName%
 WinSet Transparent, %PTrans%, AHKProgress-%AppName%
 
-If (StrLen(RunBeforeStop) > 0)
+Loop %runstp0%
 {
-  Progress % StepsPos*StepsStep, Running stop command ...
-  RunBeforeStop := EnvParseStr(RunBeforeStop)
-  RunWait %RunBeforeStop%
-  StepsPos++
+  CurCmd := runstp%A_Index%
+  Progress % StepsPos*StepsStep+StepsStep*(A_Index-1)/runstp0, Running stop command ... %CurCmd%
+  CurCmd := EnvParseStr(CurCmd)
+  RunWait %CurCmd%
 }
+If runstp0 > 0
+  StepsPos++
 
 SplitPath AppExe, AppFile, null, null, null, null
 
diff --git a/U3H_hostCleanUp.ahk b/U3H_hostCleanUp.ahk
index 3160ba6..388413c 100644
--- a/U3H_hostCleanUp.ahk
+++ b/U3H_hostCleanUp.ahk
@@ -5,7 +5,7 @@
 ; ##########################################################################
  
 StepsAll = 0
-If (StrLen(RunBeforeEject) > 0)
+If runeje0 > 0
   StepsAll++
 If regsvr0 > 0
   StepsAll++
@@ -27,13 +27,15 @@ StepsPos = 0
 Progress b2 x%PL% y%PT% w%PW% m FM%PFM% FS%PFS%, U3Helper %U3HVer% - (c)2006-2007 Markus Birth <mbirth@webwriters.de>, Cleaning up %AppName% ..., AHKProgress-%AppName%
 WinSet Transparent, %PTrans%, AHKProgress-%AppName%
 
-If (StrLen(RunBeforeEject) > 0)
+Loop %runeje0%
 {
-  Progress % StepsPos*StepsStep, Running shutdown command ...
-  RunBeforeEject := EnvParseStr(RunBeforeEject)
-  RunWait %RunBeforeEject%
-  StepsPos++
+  CurCmd := runeje%A_Index%
+  Progress % StepsPos*StepsStep+StepsStep*(A_Index-1)/runeje0, Running shutdown command ... %CurCmd%
+  CurCmd := EnvParseStr(CurCmd)
+  RunWait %CurCmd%
 }
+If runeje0 > 0
+  StepsPos++
 
 If (U3_IS_DEVICE_AVAILABLE <> "true")
 {
@@ -100,7 +102,6 @@ Else
     Skipped = 0
     Errors = 0
     Dirs = 0
-    CopyErrors := ""
 
     FileGetAttrib FAttr, %CurMask%
     IfInString FAttr, D
@@ -119,13 +120,13 @@ Else
       IfInString FAttr, D
       {
         ; also create empty directories
-        Progress % StepsPos*StepsStep+StepsStep*(OutIndex-1.00+(A_Index/FileCount))/datexe0, Creating directory %CurFile% ... (CPY:%Copied% / DIR:%Dirs% / ERR:%Errors%)
+        Progress % StepsPos*StepsStep+StepsStep*(OutIndex-1.00+(A_Index/FileCount))/datexe0, Creating directory %CurFile% ... (CPY:%Copied% / DIR:%Dirs% / SKP:%Skipped% / ERR:%Errors%)
         FileCreateDir %TargFile%
         Dirs++
       }
       Else 
       {
-        Progress % StepsPos*StepsStep+StepsStep*(OutIndex-1.00+(A_Index/FileCount))/datexe0, Copying data %CurFile% ... (CPY:%Copied% / DIR:%Dirs% / ERR:%Errors%)
+        Progress % StepsPos*StepsStep+StepsStep*(OutIndex-1.00+(A_Index/FileCount))/datexe0, Copying data %CurFile% ... (CPY:%Copied% / DIR:%Dirs% / SKP:%Skipped% / ERR:%Errors%)
         FileCopyNewer(CurFile, TargFile)
         If ErrorLevel = 2
         {
@@ -217,16 +218,23 @@ Else
 
   ;Translate paths in text files
   SetWorkingDir %U3_APP_DATA_PATH%
+  TransErrors := ""
   Loop %dattxt0%
   {
-    Progress % StepsPos*StepsStep+StepsStep*(A_Index-1)/dattxt0, Translating paths in file %CurFile% ...
+    OutIndex = %A_Index%
     CurMask := dattxt%A_Index%
-    Loop %CurMask%
+      
+    FileCount = 0
+    Loop %CurMask%, 0, 0
+    {
+      FileCount++
+    }
+    Loop %CurMask%, 0, 0
     {
       CurFile := A_LoopFileFullPath
       TmpFile := A_LoopFileDir . "\$$$" . A_LoopFileName
       FileMove %U3_APP_DATA_PATH%\%CurFile%, %U3_APP_DATA_PATH%\%TmpFile%, 1
-      Progress % StepsPos*StepsStep+StepsStep*(A_Index-0.5)/dattxt0, Translating paths in file %CurFile% ...
+      Progress % StepsPos*StepsStep+StepsStep*(OutIndex-1.00+(A_Index/FileCount))/dattxt0, Translating paths in file %CurFile% ...
       Loop Read, %U3_APP_DATA_PATH%\%TmpFile%, %U3_APP_DATA_PATH%\%CurFile%
       {
         IfNotInString A_LoopReadLine, \
@@ -244,12 +252,15 @@ Else
       Else
       {
         FileMove %U3_APP_DATA_PATH%\%TmpFile%, %U3_APP_DATA_PATH%\%CurFile%
-        MsgBox 4112, Error while translating, The datafile %CurFile% could not be translated. The original state has been restored (hopefully).
+        TransErrors .= "File: " . CurFile . " (Error while translating)`n"
       }
     }
   }
   SetWorkingDir %A_ScriptDir%
 
+  If (TransErrors <> "")
+    MsgBox 4112, Error while translating, Following files could not be translated:`n`n%TransErrors%`n`nThe original state has been restored (hopefully).
+
   If dattxt0 > 0
     StepsPos++
 }
@@ -309,6 +320,11 @@ If (KeepSettings = "0" or Unattended = "1")
     CurBranch := regdel%A_Index%
     SplitFirst(RegRoot, RegSub, CurBranch, "\")
     RegDelete %RegRoot%, %RegSub%
+    If ErrorLevel
+    {
+      SplitLast(RegSub, RegKey, RegSub, "\")
+      RegDelete %RegRoot%, %RegSub%, %RegKey%
+    }
   }
   
   If regdel0 > 0
diff --git a/U3H_hostConfigure.ahk b/U3H_hostConfigure.ahk
index 257b31f..e808beb 100644
--- a/U3H_hostConfigure.ahk
+++ b/U3H_hostConfigure.ahk
@@ -7,6 +7,8 @@
 StepsAll = 0
 IfNotExist %U3_HOST_EXEC_PATH%\%A_ScriptName%
   StepsAll++
+If runcon0 > 0
+  StepsAll++
 If regsvr0 > 0
   StepsAll++
 If dattxt0 > 0
@@ -23,16 +25,25 @@ StepsPos = 0
 Progress b2 x%PL% y%PT% w%PW% m FM%PFM% FS%PFS%, U3Helper %U3HVer% - (c)2006-2007 Markus Birth <mbirth@webwriters.de>, Preparing %AppName% ..., AHKProgress-%AppName%
 WinSet Transparent, %PTrans%, AHKProgress-%AppName%
 
-; made following step not to display b/c it occurs only once on the first launch of any U3H-app
 IfNotExist %U3_HOST_EXEC_PATH%\%A_ScriptName%
 {
   Progress % StepsPos*StepsStep, Copying U3Helper to disk...
-  FileCopy %A_ScriptFullPath%, %U3_HOST_EXEC_PATH%\%A_ScriptName%, 0
-  StepsPos++
+  FileCopy %A_ScriptFullPath%, %U3_HOST_EXEC_PATH%\%A_ScriptName%, 0
+  StepsPos++
 }
 
 ;******************************************************************************
 
+Loop %runcon0%
+{
+  CurCmd := runcon%A_Index%
+  Progress % StepsPos*StepsStep+StepsStep*(A_Index-1)/runcon0, Running config command ... %CurCmd%
+  CurCmd := EnvParseStr(CurCmd)
+  RunWait %CurCmd%
+}
+If runcon0 > 0
+  StepsPos++
+
 Progress % StepsPos*StepsStep, Checking registry settings...
 keycount = 0
 ;Registry stuff
@@ -112,16 +123,23 @@ If (ForeignSettings = "0")
 
 ;Translate paths in text files
 SetWorkingDir %U3_APP_DATA_PATH%
+TransErrors := ""
 Loop %dattxt0%
 {
-  Progress % StepsPos*StepsStep+StepsStep*(A_Index-1)/dattxt0, Translating paths in file %CurFile% ...
+  OutIndex = %A_Index%
   CurMask := dattxt%A_Index%
-  Loop %CurMask%
+  
+  FileCount = 0
+  Loop %CurMask%, 0, 0
+  {
+    FileCount++
+  }
+  Loop %CurMask%, 0, 0
   {
     CurFile := A_LoopFileFullPath
     TmpFile := A_LoopFileDir . "\$$$" . A_LoopFileName
     FileMove %U3_APP_DATA_PATH%\%CurFile%, %U3_APP_DATA_PATH%\%TmpFile%, 1
-    Progress % StepsPos*StepsStep+StepsStep*(A_Index-0.5)/dattxt0, Translating paths in file %CurFile% ...
+    Progress % StepsPos*StepsStep+StepsStep*(OutIndex-1.00+(A_Index/FileCount))/dattxt0, Translating paths in file %CurFile% ...
     Loop Read, %U3_APP_DATA_PATH%\%TmpFile%, %U3_APP_DATA_PATH%\%CurFile%
     {
       IfNotInString A_LoopReadLine, `%
@@ -140,12 +158,15 @@ Loop %dattxt0%
     Else
     {
       FileMove %U3_APP_DATA_PATH%\%TmpFile%, %U3_APP_DATA_PATH%\%CurFile%
-      MsgBox 4112, Error while translating, The datafile %CurFile% could not be translated. The original state has been restored (hopefully).
+      TransErrors .= "File: " . CurFile . " (Error while translating)`n"
     }
   }
 }
 SetWorkingDir %A_ScriptDir%
 
+If (TransErrors <> "")
+  MsgBox 4112, Error while translating, Following files could not be translated:`n`n%TransErrors%`n`nThe original state has been restored (hopefully).
+
 If dattxt0 > 0
   StepsPos++
 
diff --git a/U3Helper.ahk b/U3Helper.ahk
index 762a736..259902b 100644
--- a/U3Helper.ahk
+++ b/U3Helper.ahk
@@ -20,15 +20,30 @@ If (StrLen(U3_HOST_EXEC_PATH) > 0)
 IniRead AppName, %INIFile%, U3Helper, AppName, unknown
 IniRead AppExe, %INIFile%, U3Helper, AppExe, cmd.exe
 IniRead Unattended, %INIFile%, U3Helper, Unattended, 0
-IniRead RunBeforeStop, %INIFile%, U3Helper, RunBeforeStop, %A_Space%
-IniRead RunBeforeEject, %INIFile%, U3Helper, RunBeforeEject, %A_Space%
+IniGetKeys("runcon", INIFile, "RunBeforeConfig")
+IniGetKeys("runsta", INIFile, "RunBeforeStart")
+IniGetKeys("runstp", INIFile, "RunBeforeStop")
+IniGetKeys("runeje", INIFile, "RunBeforeEject")
 IniGetKeys("regsvr", INIFile, "regsvr32")
 IniGetKeys("datexe", INIFile, "DataToExecDir")
 IniGetKeys("dattxt", INIFile, "ParseFiles")
-IniGetKeys("dattxt", INIFile, "ParseIniFiles")   ; backward compatibility
 IniGetKeys("regbak", INIFile, "RegBackup")
 IniGetKeys("regdel", INIFile, "RegDelete")
 IniGetKeys("fildel", INIFile, "FileDelete")
+; backward compatibility:
+IniGetKeys("dattxt", INIFile, "ParseIniFiles")   ; backward compatibility
+IniRead RunBeforeStop, %INIFile%, U3Helper, RunBeforeStop, %A_Space%
+IniRead RunBeforeEject, %INIFile%, U3Helper, RunBeforeEject, %A_Space%
+If (StrLen(RunBeforeStop) > 0)
+{
+  runstp0++
+  runstp%runstp0% := RunBeforeStop
+}
+If (StrLen(RunBeforeEject) > 0)
+{
+  runeje0++
+  runeje%runeje0% := RunBeforeEject
+}
 
 ;******************************************************************************
 ;** Get Taskbar position
diff --git a/U3Helperex.ini b/U3Helperex.ini
index 58d2a63..0eb7f95 100644
--- a/U3Helperex.ini
+++ b/U3Helperex.ini
@@ -2,16 +2,19 @@
 AppName=PC OnPoint
 AppExe=PConPoint.exe
 
-; enter commandlines to run before stopping the application and before
-; ejecting the device. All variables mentioned under [FileDelete] work.
-RunBeforeStop=
-RunBeforeEject=
-
 ; set Unattended to 1 to suppress settings-related questions
 ; this way, previously existing settings on the host always get
 ; replaced by the U3's settings and restored on eject
 Unattended=0
 
+; enter commandlines to run before hostConfigure, appStart (if used via
+; U3Helper), stopping the application and before ejecting the device. All
+; variables mentioned under [FileDelete] work. One command per line.
+[RunBeforeConfig]
+[RunBeforeStart]
+[RunBeforeStop]
+[RunBeforeEject]
+
 [RegBackup]
 ; enter registry branches to be backed up (+deleted) on eject
 ; and restored on first run
diff --git a/mb_EnvTools.ahk b/mb_EnvTools.ahk
index 4b6ead7..c9f8ce2 100644
--- a/mb_EnvTools.ahk
+++ b/mb_EnvTools.ahk
@@ -45,7 +45,7 @@ EnvSort()
     {
       CurNam := EnvVarsx%A_Index%
       CurVal := EnvValsx%A_Index%
-      If ((StrLen(CurVal) > MaxLen) and (StrLen(CurNam) > 1))
+      If ((StrLen(CurVal) > MaxLen) and (StrLen(CurNam) > 0))
       {
         MaxLen := StrLen(CurVal)
         MaxIndex := A_Index
@@ -140,6 +140,8 @@ EnvUnparseStr(instring)
   {
     ReplFrom := EnvVals%A_Index%
     ReplTo := "%" . EnvVars%A_Index% . "%"
+    If (StrLen(ReplFrom) < 2) 
+      Continue
     StringReplace instring, instring, %ReplFrom%, %ReplTo%, A
   }
   return instring