OK here's the story
I am using Win 7 - 64 bit, with 4 GB memory, approximately 9 TB storage. I have used CS 4 since it was released, bought CS 5 (did not install it) then I bought CS 5.5, installed it yesterday. I wanted to keep both CS 4 & CS 5.5 on the same computer since CS4 was doing good (not crashing too much). After I installed CS 5.5, I opened and converted a CS 4 project to test CS 5.5. It seemed to work. Today I came in and tried to open the same project, CS5.5 crashed every time I tried to open it. I then tried to open the project in CS 4, but it would not let me. Since the client was here for the final edit, I had to un-install CS 5.5, so I could open the project in CS 4 and complete it. So the question is - If I re-install CS 5.5 on my edit computer that has CS 4 on it, can I keep both versions without problems?
Another question..... I keep two edit systems in operation (sitting beside each other) the second edit system as a backup for tight deadlines. I also have to take my laptop on locations to edit. Can I install CS 5.5 on the two main edit computers and CS 5 on my laptop... if so, will CS 5 open a project saved in CS 5.5?
The two versions do not conflict. You can have both installed.
Having said that, it's still a good idea to finish CS4 projects in CS4, and only start new ones in 5.5.
There is no reason that having Premiere Pro CS4 and Premiere Pro CS5.5 on the same computer should cause problems. Most people around here have multiple versions on the same comptuer without problems.
Please file a detailed bug report so that we can look into what's causing your specific crashing problem.
> will CS 5 open a project saved in CS 5.5?