rrbiswasatfasdotharvarddawtedu created the issue

This happens on SFTP servers and should hold for other protocols also: if i use quicklook to see a file or textwrangler to edit a file and the file changes on the server (e.g, if you edit it on some other ssh connection), often quicklook stops working for that file for that entire session (saying 'no item selected') and textwrangler faces problems leading to a cyberduck crash. It appears the local copies created by cyberduck in the .../-Tmp-/.. folder are not erased/updated when those errors occur. What particular sequence creates the problems is still a mystery to me - but they happen reasonably often.