Reply to Traktor 3 LE not installing correctly

Has anyone had issues with loading and form of traktor and it opens once after install but when you go back to it your pc (laptop) tells you that the software exe is damaged or moved?

I loaded the software direct from the disc and I'm still getting this message. plus I can go and look right at the exe on my computer and its there.

What is the problem here? I need any and every body's help. I have a gig Saturday evening . March 19th.