I have been trying for two months, and in spite of very useful advice from such as this forum, I have had little success. It did load successfully once for about a week, and then I could not access it. In fact I have the sdame problem with all CS3 and CS4 programs.
I have tried every potential solution offered here or by Adobe - without any success.
One of the errors (1603 : 1303) I am getting is access to write to a file "C:\Config.Msi\*.rbf" - there is no such file anywhere on that location - or on the computer.