You receive a message such containing this:
"working copy admin area is missing"
How to resolve this:
Step 1 -- Rename the directory that is causing the error from a shell prompt and prefix it with __
mv com_docman __com_docman
Step 2 -- Using your subversion client refresh your working copy, then "update" the directory that is causing the problem e.g. update com_docman.
Step 3 -- Now you can commit the __com_docman directory.
After you have done this follow these steps, using your subversion client:
Step 4 -- delete the com_docman directory from your working copy
Step 5 -- rename __com_docman back to com_docman
Now "commit all" and both your working copy and repository will be in sync.