I've encountered an error message (sorry, it's German) which says:
--\
Der Fehler (0xC0000005) ist im Thread 'dopus_fileinfo' an Adresse 0x000007FEF5E4C7A5 aufgetreten.
--//
The Thread could be gracefully stopped and I could still work with DOpus, however I noticed that the file highlighting did not work anymore afterwards.
I have defined highlightings for read-only files, and based on time.
It also could be that this bug is related to the new MTP implementation because I know that I had open one tab to my Galaxy S2. The highlighting functionality was introduced before that version with MTP support and then I did not have this error.
I just could reproduce the issue - there was no device connected which used MTP.
The error is thrown when I click on "Computer" (where all drive nodes are attached) and the file and folder labels are enabled.
If I disable the labels the error is gone.