When you try to install Adobe CS5 products, you might get an error like: Installer failed to initialize. Please download adobe support advisor to detect the problem. Downloading the support advisor didn't help me because it showed me what OS version I'm running, and a link to adobe support.

Here is what we need to do.

1. Go to to your temp directory. (Press Windows+R key and type %temp% and press Enter).

2. Open the file PDApp.log.

3. Look for any [Fatal] entries.

4. What I have got is that the installer wasn't able to create C:\DOCUME~1\username\LOCALS~1\Adobe\OOBE\PDApp\PDApp.exe.

5. Now create those folders for the installer, and run the installer once again.