i tried uninstalling curse client v4 via add and remove program files and now every time i start my computer it gives me a application install security warning asking me if i wish to install it. ive tried to remove anything related to the client yet this message still appears every time i start my computer. ive gone back to v3 for the meantime.

Windows 7 x64

I have exact problem, i had Curse Client in Add/Remove programs x2, i uninstalled one, but when i tried to unistall another "curse client" nothing happens. Setup.exe wont work aswell now. Windows XP SP3

Please report Curse Client v4 issues via the in-program bug submission tool thingy.  It's the little icon that looks like a bug in the bottom left of the app.