Hello and welcome to Advanced Installer forums,
Usually, that error message means that a custom action failed during the process (either install or uninstall).
Could you please give me some more details about what exactly you are trying to achieve through that .BAT file?
If possible, could you please forward me:
- a copy of your .AIP file
- a download link for the setup build with the above .AIP file
by e-mail at support at advancedinstaller dot com so I can further investigate this?
Best regards,
Catalin