Comment 14 for bug 427100

My error message matches the one in #475488 - for a bit of extra fun, use a browser like Chromium who prefers to save downloads to ~/Desktop, this will cause Nautilus to go in an infinite loop, blanking and restarting the desktop.

Perhaps assertion failures in jp2_decode should just give a blank preview instead of crashing the file browser. If you rename to .jpeg the problem persists, but rename to .txt or disable previews and everything is fine again.