What might be happening is that the Windows Security information on the files
does not allow you to read them on the other system. Are you loggin on to both
systems with the username "administrator" or with something else?

You can right-click on the the .pproj file and then select properties and check
the Security tab to see which permissions are being set on the file. It might
be needed to add some rights to the whole folder the project is in. Unfortunately
this can be tricky to do and it is hard to guide you in that matter without being
able to see what is going on with your system.

But you can at least look in that section to see if anything looks "off".

If you know someone who's (very) good with Windows and they know what
"NTFS permissions" mean (and do), then they should be able to help you out
in that department.

Good luck!

Hmmm, I just did a test. I copied a Premiere Pro project folder, which contains both the project assets and Premiere Pro project file, to a new location on another hard drive. I then moved the project folder on the old drive to another location to make sure the assets couldn't be loaded from the old location. Then I opened the Premiere Pro project file from the new location on the other hard drive. The project loaded just fine. I checked the properties for an asset, and sure enough, it was being loaded from the new location on the other hard drive. From this I can only conclude that the drive letter is not hardwired into the project file for an asset, unless it is located on a separate hard drive from the project file.

Well, I'm sorry about that. I hope you get the problem sorted out some way.