Hello and welcome to our forum!
This kind of behavior is encountered if the files left after uninstall are edited after the install, for example by your application. In this case you need add two file removal operation. To do this, you need to go to your project - "File and Folders" page, select System 64 folder. Right click inside the folder and select
"New file operation - File removal. In the name field enter the name of the file you want to remove and select Remove On : Component Uninstall.
Repeat this step for the second file.
Another situation when this behavior is encountered is described in the
Why files are left behind after package uninstall? FAQ.
Hope this helps! If these are not the cases, please send us the .AIP (project) and a
verbose log of the installation to
support at advancedinstaller dot com so we can investigate them.
Regards,
Mihai