Reports that large exception messages still being generated/crashing stuff

[nateberkopec]

Have to figure out what code path could possibly be causing this.

[mrhead]

@nateberkopec Is this the same thing as #642?

I can't figure it out from the issue title :).

[nateberkopec]

@mrhead Not really. This report manifested as not being able to send to the Sentry server, not blowing up databases, as in your report.

[mrhead]

Got it!