Tortoise Check-in error Checksum mismatch

Question

I cannot figure out why I get this error during check-in. I checked in successful only a few hours ago so not sure why now it's complaining

Error: Commit failed (details follow):  
Error: Checksum mismatch for   
Error: 'C:\sss\sss\trunk\xxxx\.svn\text-base\Header.ascx.svn-base'; expected:   
Error: '3cee96f580409a1711a47541a07860dd', actual: 'a5fc0f8819b88bf32ab38d4c9a6b0654'  
Error: Try a 'Cleanup'. If that doesn't work you need to do a fresh checkout.  

I got latest and also performed a clean-up which said successful so not sure what else to do.

Answer 1

Something has gotten out of sync or has become corrupt, and because it's in your .svn BASE directory, unless you are confident tinkering with this, you're probably better off deleting the parent of the .svn directory and then perform an update. Of course, take a backup or see if an export works before doing this, so you don't lose any changes.

FWIW, I get this sometimes with our library references where Visual Studio seems to keep a lock on some files (even though it's not compiling) and won't let me update them. I believe this is related to the xml documentation files.

Note: Subversion 1.7+ implements a new working copy approach which centralises the meta data, and it now has a single .svn directory at the root of your working copy. Your best bet is a cleanup, failing that a fresh checkout into another directory and export or file copy the corrupted working copy except for the .svn directory, over to the fresh checkout, and commit any local changes.