Hello,

Thank you for the suggestion for changing permissions on the folder. This worked.  I've determined the problem I was having with the GUI not functioning properly. I had entered content into the "(Further) Registration Params" field of the CMTK Registration GUI but inadvertently had entered a long — instead of a double --. Changing it back to -- fixed the issue and I was able to run it.

Thank you for your time and help,
Nik Santistevan