I took advantage of the recent sale and bought the NIK Collection, and I also purchaed Perfect Photo Suite 7. I installed NIK and everything went fine. Then, when I installed Perfect Photo Suite 7, it casued PS5 to crash, and PS6 to work only intermittantly. I went back and uninstalled PP Suite 7, and everything is back to normal. I already had Perfect Resize installed before the NIK Collection, and it didn't casue a problem, so I am wondering if NIK and PP 7, or PP 7.1, the updated version, cannot be installed together. BTW, I use Windows 7.