I am re-running some MRI scans with multiple versions of FreeSurfer. I am aware that FreeSurfer 5.2.0 is deprecated and don't intend to use its output, other than for comparisons with current versions.
My problem is that I have copied a .license file (as mikeschmidt@schmidtgracen.com from February 2017) that works successfully with version 6.0.0 (known-good) into FreeSurfer 5.2.0's FREESURFER_HOME and FreeSurfer 5.2.0 finds the file, but says it is invalid. Renaming the .license file to license.txt resulted in it not being found at all. I've even retrieved an old license file (as mschmidt@umc.edu from prior to April 2015) from backup that I used to use (email address no longer exists), thinking I had used it with 5.2.0 in the past, but it is also reported as invalid.
I've read in the forum that 6.0.0 uses a different license file format due to libcrypt changes. But I can't seem to get new or old licenses to work. Is it possible to register for a replacement old-style license? Or is there another way to get 5.2.0 to work?
I applied for a new license today to test everything before asking for help, expecting it would work with v6.0.0 but not 5.2.0. Testing validated my assumption, leading me to believe I need to acquire a valid license in the old format in order to run FreeSurfer version 5.2.0. Is that possible?
Thank you for any assistance, Mike Schmidt