Hey there Nathan~
I have the EXACT same issue and have tried what you have. I have even wiped and reset my device to factory settings and as soon as I install facebook I get the same exact error- with the same 1504 error- and this is even when no other applications have been installed. I've searched for a fix and neither facebook or blackberry have a fix. Like you, this happened after the upgrade. In addition the 'input system error/the system is being restarted' error comes shortly afterwards when spell-checking.I've tried all the solutions suggested on the BB knowledge base-nothing works! I have NO problems with the facebook app on my iPhone. We definitely need a fix for this.
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