There was no problem when I installed it on my main PC, but I got a new laptop and neither CS5 or 5.5 will start after installing Blatner Tools. I'm going to try again, but thought I'd ask if anyone else had this happen and knew a solution.
I downloaded the file from DTP, so I'm sure it's the latest one.
Removing the whole DTP tools folder from the plugins folder eliminated the problem. Haven't had time to look into different versions or try the install again.