Cannot Duplicate application...

Cannot Duplicate application...

Hello,
 
I cannot duplicate my Art Inventory Management 3.0
 
When i click duplocate or copy application it just never duplicates.
 
I have Enabled Edit Access to Support.
 
When i save the application and create a new application from it I get the following error:
 
Error at lineNumber:1
Function:thisapp.general.ArtSerial() does not exist
 
 
The function is there and it does exist.
 
Please help me correct this issue.
 
I need to be able to duplicate this application.
 
Thanks