Bone tool not working, crashing Animate

Heya. I've had this character I've been animating for quite awhile using the bone tool. But now, it crashed and after I reopened the document, it only lets me move the objects as if they were symbols and not like they were bones. It's hard to explain. It's as if the objects aren't linked together anymore and just function as symbols. After messing around for a little bit, it always crashes. This isn't to do with the document; I copy and pasted the frames to a separate doc and it still continued. Please don't tell me the file is corrupted oh god. Please reply to this post if you have any solutions!