I got this all the time after updating to 9.0 (OS 10.8.2):
That's Clipboard|c|3015 for the benefit of anyone searching.
The error went away with 9.0.1, but a version has reappeared (multiple times at each launch) since updating my OS (to 10.9):
That's SpanBox|c|2178 for the benefit of anyone searching.
What does an "Internal self-test error" mean?