| Error Message | Likely Cause | Solution | | :--- | :--- | :--- | | Cannot find mkmk.exe | Environment variable CAA_ROOT missing | Run CAA Environment Editor and re-apply settings. | | Visual Studio version 8.0 not found | VS 2005 not installed OR wrong bitness | Install VS2005 (Not Express edition). Ensure VS is 32-bit even on 64-bit OS. | | Licensing error -114 | License server unreachable or expired | Check DS License Server health. V5R20 uses old port 4084 (not 4085). | | DLL load failure: CatiaV5R20.dll | Base CATIA and CAA versions mismatch | You must have the exact same patch level (e.g., V5R20 SP3 for both). |