Poking around the gogoprod.js file that provides the meat of the run time actions in a Producer production I found that the cmi.core.session_time (time for this session) was not set as required for SCORM 1.2 compliance so I took a stab at modifying the code to set it. In order to modify the file I had to uncompress it to make it reasonably readable by humans. I am providing both the file I uncompressed (using Polystyle) unaltered and the file with fixes for the session time in SCORM.
I haven't at this point had a chance to fully verify the modified file but it should work.
I am going to use the file as is -- recompressing it saves 40 k download or so but it just is too hard to work with compressed.