Hello,
we have a Project with Multiple Instances. After some Updates of Advanced Installer we found out, that the Multiple Instances Dialog was not Showing for the second Instance to Install. We run the Setup after completed first instance Installation in UI. The Setup ist starting but ending by itself.

When we run the Setup.exe in Silent Mode everything ist working.

To check if we have some data problems , we restored our complete Advanced Installer Project Folders from our backup to the last working Build.
Wenn we make an new Build with this data with AI 20.7.1, the Setup.exe have the Problems described.

In Atachement our .aip File.
What we can do to run our Multiple Installer Version with UI like before?

Best Regards
Andreas

I send the complete Project to your Support Address for Analyse

Hi Andreas,

I've tested the scenario and, indeed, I've reproduce the problem. This issue seems to appear when the "Use WinUI rendering" option is enabled in the "Themes" page, "Settings" tab. A fix will be available for this in a future version of Advanced Installer. Thank you for reporting it to us!

Meanwhile, you need to uncheck that option in order to have this working. I'm sorry for the inconvenience!

Best regards,
Eusebiu

Hello Eusebiu,

i've deactivated the "Use WIN UI Rendering" option in the Theme Settings, but it's not working after a new Build.

Regards
Andreas

Hi Andreas,

I've noticed that you have two different builds in your project, so please make sure that you disable that option for both of them.

Best regards,
Eusebiu

Hello Andreas,

This has been fixed in version 21.3 of Advanced Installer, released on December 14th, 2023.

Best regards,
Catalin