Alienware command center.. Need to install new version but wont let me uninstall the old!

Hello folks

Basically, i started getting the COM error in alienFX when trying to add an EXE for the invidual light sequences..

I then downloaded a new version, tried to install and it wouldnt and asked me to restart.

I did this and it says exactly the same thing.

I've tried uninstalling command center through programs and features menu (windows 7 64 btw) and it says " The installation source for this product is not available. Verify that the source exists and that you can access it."

"E:\Windows\installer\35215c5.msi"

Turns out that folder doesnt even exist and i have no idea how to uninstall it :/

Please help

Cheers

Srogar