Nik Collection 4 doesn't work, but it erased Collection 3. Now what?

After hours of effort, everything finally worked with Nik 3 on my PC. I just bought 4, and the only Nik programs that work are Perspective, Silver Efex 3, and Viveza 3. It also apparently erased Nik Collection 3. Im a photographer, not a computer guy, so what do I do next?

well → Issues with Nik4 - #8 by Wolfgang and further links

I know, isnt that f…cking ridiculous? Same thing happen to me. Plus I’ve send two emails to DXO tech support and no one has responded. Really pisses me off. I’ve had problems in the past with installing their software. I just want my money back, then screw them!