controls.dll???

I installed smartFTP....got my files uploaded to my site, everything worked great. I rebooted my computer and it says smartFTP can not start because of an error with the controls.dll and that re-installing may fix the problem. So I re-install, works great, reboot and I'm back where I started. I've re-installed it 3 times now and every time I reboot I get the same error about about the controls.dll.

I did the online setup files, updates, everything and nothing works.