Trying to install a trial version of Designer Pro on a friends machine. It fails rather quickly with the error in the picture.

We've done the basics, restarted, run as admin, installed other programs to see if there's a Windows installer problem. All seems fine.

Before I start altering permissions in the Temp folder, has anyone come across this before? I have the log files if that's of any use.

Click image for larger version. 

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