code 255: the file can not be accessed by the process when commiting .mdf, .ldf database files

Question

I use mercurial as my DVCS and tortoiseHg. when I'm trying to commit .mdf and .ldf files I get and error:

trouble committing "project root"/App_Data/WebStore.mdf!
terminated: "full path"/App_Data/WebStore.mdf: The process can not get access to the file
[command returned code 255 Sun Feb 03 13:57:29 2013]

I committed hundreds of times these files but now get this error. Unfortunately I don't remember what I did.

Any ideas about what can trigger such behavior??

Thanks for help in advance!

Answer 1

Check for process, which opened and locked WebStore.mdf. Save work and reboot?