Forms Compilation Error: Missing Library Path

This compilation error means the Forms Builder is looking for the library at an incorrect hardcoded path. You need to open `CUSTOM.pll` in Forms Builder, expand the attached libraries, and remove the reported library (APPCORE2.pll).

Yes, re-attach the library. The critical step is that when Forms Builder asks to remove the directory path, you must confirm with ‘Yes’. Then copy and recompile the updated `CUSTOM.pll`.