Good day! I have faced with some strange problem using Advanced Installer 21.1. I have a project in multiple instances mode. -Generate instances at installation time- option is on. And installation works fine. I install several instances from current installation package. But then I make installation package rebuilding (Rebuild All menu) without any project options changes. After that if i try to execute the new installation package .exe file Windows shows error that another version of this product was already installed and installation cannot continue. If I uninstall instances that were installed with previous installation package the new installation package begins to work fine and I could install several instances again. But the next project rebuilding repeats the problem.
What is the reason? Help me please...