The tape7 files in the latest version of MODTRAN5 changed format (yet again). Hence, our parser turns tail and runs.
We need to get the current version or hope that someone will get us an example "tape7.scn" file.
I am going to assign this one to Niek (for now) since he has been the most active in our recent changes to the tape7 parsing.
We have since moved on to newer release versions of MODTRAN5, and we are focusing on making sure those work.