Apple Script error -10006

Question

Hello guys, I have an big Problem with my Programm in Apple script...
Everything of it works until a simple "duplicate" command.  Then I will get error 10006 here is the script:
ps: I use "x" for folder name where I get "minecraft.jar"
tell application "Finder"
  --Ermitteln des Ordner "Versionen" welcher sich im Ordner "Resources befindet"--
          set i to (path to me) as string
          set ii to (container of item i) as text
          set theFolder to (container of folder ii) as text
          set Versionen to folder "Versionen" of folder "Resources" of folder "Contents" of file i
  --Application Support definieren--
          set AppSupp to (path to application support from user domain) as text
  --Einleitende Worte für das Programm--
          display dialog "Willkommen im automatischen Versionen-Wechsel Programm für Minecraft. Bitte wählen Sie aus der folgenden Liste die Version, wechle Sie installiert haben wollen. -Ich weise darauf hin, dass die benützung auf eigene Gefahr ist."
  --Auswahl der Version--
          set liste to choose from list {"Vollversion 1.2.5", "Vollversion 1.2.3", "Vollversion 1.1", "Vollversion 1.0.0", "Beta 1.9 Pre 6", "Beta 1.8.1", "Beta 1.8", "Beta 1.7.3", "Beta 1.6.6", "Beta 1.5_01", "Beta 1.4_01", "Beta 1.3_01", "Beta 1.2_02", "Beta 1.1_02", "Beta 1.0"}
          if liste is {"Vollversion 1.2.5"} then set x to "v_1.2.5"
          if liste is {"Vollversion 1.2.3"} then set x to "v_1.2.3"
          if liste is {"Vollversion 1.1"} then set x to "v_1.1"
          if liste is {"Vollversion 1.0.0"} then set x to "v_1.0.0"
          if liste is {"Beta 1.9 Pre 6"} then set x to "b_1.9 Pre 6"
          if liste is {"Beta 1.8.1"} then set x to "b_1.8.1"
          if liste is {"Beta 1.8"} then set x to "b_1.8"
          if liste is {"Beta 1.7.3"} then set x to "b_1.7.3"
          if liste is {"Beta 1.6.6"} then set x to "b_1.6.6"
          if liste is {"Beta 1.5_01"} then set x to "b_1.5_01"
          if liste is {"Beta 1.4_01"} then set x to "b_1.4_01"
          if liste is {"Beta 1.3_01"} then set x to "b_1.3_01"
          if liste is {"Beta 1.2_02"} then set x to "b_1.2_02"
          if liste is {"Beta 1.1_02"} then set x to "b_1.1_02"
          if liste is {"Beta 1.0"} then set x to "b_1.0"
  --Ist Minecraft schon Installiert? Wenn Ja dann löschen--
          if folder "minecraft" of folder AppSupp exists then
                    delete folder "minecraft" of folder AppSupp
          end if
  --MinecraftVorlage entpacken--
          open file "minecraft.zip" of Versionen
  --Pause--
  delay 1
  --Finder Fenster schließen--
  close Finder window 1
  --Vorbereiten der MinecraftVorlage--
duplicate file "mincraft.jar" of folder x of Versionen to folder "bin" of folder "minecraft" of Versionen.
Could anyone say me what's wrong with this line?
  --Installieren--
          duplicate folder "minecraft" of Versionen to AppSupp
  --Pause--
  delay 1
  --Temporäre Dateien löschen--
          delete folder "minecraft" of Verionen
  --Alles Richtig?--
          if folder "minecraft" of folder AppSupp exists then
                    display dialog "Die Installation von Minecraft wurde erfolgreich abgeschlossen!" with title "MC-Installer"
          else
                    display dialog "Es ist leider ein unerwartetes Problem bei der Installation vorgelaufen." with title "MC-Installer"
          end if
end tell
Error msg:
tell current application
  path to current application
                    --> alias "Macintosh HD:Users:manuelfederanko:Desktop:VersioChanger.app:"
end tell
tell application "Finder"
          get container of item "Macintosh HD:Users:manuelfederanko:Desktop:VersioChanger.app:"
                    --> "Macintosh HD:Users:manuelfederanko:Desktop:"
          get container of folder "Macintosh HD:Users:manuelfederanko:Desktop:"
                    --> "Macintosh HD:Users:manuelfederanko:"
          get folder "Versionen" of folder "Resources" of folder "Contents" of file "Macintosh HD:Users:manuelfederanko:Desktop:VersioChanger.app:"
                    --> folder "Versionen" of folder "Resources" of folder "Contents" of application file "VersioChanger.app" of folder "Desktop" of folder "manuelfederanko" of folder "Users" of startup disk
  path to application support from user domain
                    --> alias "Macintosh HD:Users:manuelfederanko:Library:Application Support:"
          display dialog "Willkommen im automatischen Versionen-Wechsel Programm für Minecraft. Bitte wählen Sie aus der folgenden Liste die Version, wechle Sie installiert haben wollen. -Ich weise darauf hin, dass die benützung auf eigene Gefahr ist."
  --> {button returned:"OK"}
          choose from list {"Vollversion 1.2.5", "Vollversion 1.2.3", "Vollversion 1.1", "Vollversion 1.0.0", "Beta 1.9 Pre 6", "Beta 1.8.1", "Beta 1.8", "Beta 1.7.3", "Beta 1.6.6", "Beta 1.5_01", "Beta 1.4_01", "Beta 1.3_01", "Beta 1.2_02", "Beta 1.1_02", "Beta 1.0"}
                    --> {"Beta 1.8.1"}
          exists folder "minecraft" of folder "Macintosh HD:Users:manuelfederanko:Library:Application Support:"
  --> false
          open file "minecraft.zip" of folder "Versionen" of folder "Resources" of folder "Contents" of application file "VersioChanger.app" of folder "Desktop" of folder "manuelfederanko" of folder "Users" of startup disk
  close Finder window 1
                    --> {}
          copy file "mincraft.jar" of folder "b_1.8.1" of folder "Versionen" of folder "Resources" of folder "Contents" of application file "VersioChanger.app" of folder "Desktop" of folder "manuelfederanko" of folder "Users" of startup disk to folder "bin" of folder "minecraft" of folder "Versionen" of folder "Resources" of folder "Contents" of application file "VersioChanger.app" of folder "Desktop" of folder "manuelfederanko" of folder "Users" of startup disk
                    --> error number -1728 from file "mincraft.jar" of folder "b_1.8.1" of folder "Versionen" of folder "Resources" of folder "Contents" of application file "VersioChanger.app" of folder "Desktop" of folder "manuelfederanko" of folder "Users" of startup disk
Ergebnis:
error "„Finder“ hat einen Fehler erhalten: „folder \"bin\" of folder \"minecraft\" of folder \"Versionen\" of folder \"Resources\" of folder \"Contents\" of application file \"VersioChanger.app\" of folder \"Desktop\" of folder \"manuelfederanko\" of folder \"Users\" of startup disk“ kann nicht als „file \"mincraft.jar\" of folder \"b_1.8.1\" of folder \"Versionen\" of folder \"Resources\" of folder \"Contents\" of application file \"VersioChanger.app\" of folder \"Desktop\" of folder \"manuelfederanko\" of folder \"Users\" of startup disk“ gesetzt werden." number -10006 from folder "bin" of folder "minecraft" of folder "Versionen" of folder "Resources" of folder "Contents" of application file "VersioChanger.app" of folder "Desktop" of folder "manuelfederanko" of folder "Users" of startup disk

Answer 1

path to resource is straightforward.  the command:
path to resource "filename.xxx"
will return an alias to /path/to/your app/Contents/Resources/filename.xxx, automatically accounting for placement of the app file in the file system.  use the in directory parameter if you want to specify a subfolder of the resources folder.  The only tricky thing about it is that when you run the script from the script editor it may think the currently running app is the script editor, not your app, and swo return a path to script editor's resource folder.