Hi Ted,
my first guess would be that your SCORM manifest doesn't use unique identifiers for each sco as required by the SCORM spec. We rely on this a lot more in the latest code which could be the problem you are seeing with your packages. We do have an improvement request (MDL-38060) to improve the warnings/error reporting around this.
But - that might not be your problem. A whitescreen in Moodle usually reflects a PHP error - if you could elevate your debugging level and turn display errors on and attempt to enter your SCORM again it should give some more detailed errors.
Once you have collected the relevant PHP errors if you think it is a bug with Moodle rather than your SCORM packages feel free to create a tracker issue with all the relevant information and a SCORM package that allows us to reproduce.
The toc collapsing issue you are having is probably MDL-45949 - feel free to add your vote to the issue by pressing the "vote for this issue" link - I haven't had time to look at this but would appreciate any patches... (although if Moodle decides to move towards Jquery in core we may rip that code out and replace it with a jquery equivalent)
thanks,