Can't uninstall

[Amphor]

Problem occured when I tried to upgrade to 11.50
installer says that it cannot uninstall.
Before throws some windos to browse some setup.msi file.
neither "Ok" nor "cancel won't work on the error

What to do?

[spwolf]

Please follow instructions here:
http://www.conexware.com/support/ind...kbarticleid=10

thanks!