Hello and welcome to our forums,
Unfortunately, I can not say for sure why this is happening.
In order for me to further investigate this, could you please forward me the following resources:
- a copy of your .AIP file
- a download link for the setup (the EXE/MSI you build using the Advanced Installer Project file)
by e-mail at support at advancedinstaller dot com?
Additionally, if possible, could you please also forward me a step-by-step test-case on how you test this outside of Advanced Installer?
Best regards,
Catalin