Hi Pete,
Short Solution:
Please save complete symmetry information for your maps before saving
with PyMOL v1.5.0.1.
Copying the symmetry information from a PDB to the map fixes this
problem because it updates the map's space group field. So, typing
symmetry_copy src_pdb_file, target_map
before
Greetings,
PyMOL v1.5.0.2, with the session loading bugfix, has been posted
(http://pymol.org/dsc/ip/). The open-source code has also been
updated.
Please continue to report bugs to us and the open-source bug tracker
(https://sourceforge.net/tracker/?atid=104546&group_id=4546).
Cheers,
-- Jason