Do you get the same crash if you turn off Content Types again, then go into the folder and switch to Thumbnails mode, or turn on any extra columns you had set up for the Content Type that was being triggered?
Based on the thread not being named, it's probably a third party shell extension which is crashing, not Opus itself, which usually happens due to asking them to generate a thumbnail or information for a column.
If there are crash logs, please send them to us and we can see what they indicate: