Hi,
I am attempting to install a trial version of PixInsight on a MacBook Pro running OS 10.7.5. On the first attempt to enter the User ID and Activation Code (both copy and paste) I got an error about unable to create a file. I believe on the first attempt I was attempting to install PI-macosx-x86_64-01.07.04.0759-20111228-t.zip. In any event on latter attempts to enter the User ID and Activation Code on both versions I get an error - Authentication error. The server says "INVALID AUTHORIZATION CODE?".
Thanks,
George