Hi, Using the full analysis script, optimization of the 'ellipsoid' model crashes out early with the following output: relax> results.write(file='results', dir='ellipsoid/init/', force=True, compress_type=1) Opening the file 'ellipsoid/init//results.bz2' for writing. RelaxError: Cannot open the file 'ellipsoid/init//results.bz2'. No such file or directory. I'm not sure why it would try to open this directory though. Isn't it odd that there are 2 forward slashes? Tyler