Photoshop CS5 Exit Code 7 Unable to get root from inChildPath

Question

I downloaded the trial version 32 bit and 64 bit, to my desktop (Core I7 3.2 GHZ, 12Gb ram, Win XP Pro 64) and when installing, it doesn't get past 0%, just spits out this:
0 fatal errors, 1 error, 0 warning
Error: Unable to get root from inChildPath
Exit Code:7 Unable to complete silent workflow
I wanted to see if the install files were bad, some I copied to my craptop, which runs Vista 32 bit, and it works fine. Any word yet on what causes this error? Going to check and see if I missed any updates while I wait to see if anyone's had this issue.

Answer 1

Using your links, I can find Adobe's listing for error code 7, but all it tells me is that exit code 7 does not define my problem, but the lines that follow exit code 7 do. Which is the "unable to get root from inChildPath" bit. I might have missed something in your post, but when I poke around the links in the document, and in Adobe's troubleshooting search feature, I can't find anything about the terms "root from inChildPath".
Here's a recap of everything I tried yesterday, note that each error is exactly the same:
At the day's beginning, I had Adobe Master Suite CS4 installed, including PS CS4.
Without un-installing, I attempted to install Photoshop CS5 Trial > Got the error
Copied PS CS5 files to laptop, which also has Master Suite CS4 > Installed fine
Uninstalled Photoshop from Master Suite, then installed PS CS5 > Got the error
Tried to install only 64 bit > Got error
Did "Run As", signed in as admin > Got error
Booted into Safe Mode to install to see if a background process was conflicting > Got error
Reinstalled Master Suite for 6 hours and quit trying...