Cannot install Flex Monkey

I am using Polish version of MS Windows XP 2002 Professional. We were using FlexMonkey 0.85 before, but I uninstalled it and removed all "FlexMonkey" and 'gorillalogic' files from my computer and also corresponding entries from registry.

If I press installation button on your website the process starts, but then I get error message in Polish saying that my installer is incorrectly configured and installation is aborted.

The problem is difficult to debug, because my colleague, who has identical working environment went through installation. But the person who needs FlexMonkey on his machine is me. Can you suggest some workaround?