in case you are still in this trouble.
several tips you may check:
- use csh other than bash. The mt_prep_snap seems not working in bash but go smooth in csh.
- check if the segmentation error were casued by calamp.c. If it is, then you have to downgrade you gcc and g++ compiler. I did this in fedora 30 with default gcc version 9.2x, the calamp.c program intends to use 4.3.x version. However, I managed to recompile it using gcc-7.4.0 version and that get rid of the segmentation fault.
- feed mt_prep_snap’s second parameter(data folder) with absolute path, do not use relative path.
I digged these out after 2 weeks of struggling and it seems everthing goes ok so far. I am waiting for the finish of stamps process in matlab:)