Ok so I purchased a 1995 Z28 with some type of a Built LT1 with roller rockers, T56 , New clutch, bunch of wiring mangled and missing parts. The engine is obviously professionally built and nobody who had their hands on it to this point got it completely put back together. Trying to get C.A.T.S. Winflash Running and every time I run the setup for the program and click complete setup it just goes away. Tried Windows10, Windows 8.1, same thing. Already have TunerProRT and a bunch of hardware. From what I am finding this software works best with older versions of Windows such as Windows XP. never really tried it before, I'm sure there are some things I am unaware of. This is new to me but I have been tuning on LS based platforms for about a year now. Tying to find an older laptop with WindowsXP currently. If anyone is running this program on a newer version of Windows I will just have to figure it out.