Thanks for the follow-up. The crash must have happened before the log could report the error (and the error text turned out to be a red herring). In the future, a good test to try and find this type of difference in behavior is the test where instead of loading both sides of the compare, we load only one (just Left or just Right) and Expand All. This would help limit the test scenario to just the Work computer (independent of USB). Another good test would be to compare the Session Settings (XML export) to find the difference in Filters.