title: “No files were changed or added since the last commit. There's nothing for TortoiseSVN to do here...”
body: <p>We are using Tortoise SVN and have come to a problem when trying to commit modified files.
  When we try to commit the file svn does not recognise that it has been modified or added and displays 
  “No files were changed or added since the last commit. There's nothing for TortoiseSVN to do here...”
  The only way we can now commit one file is to go out to the folder and select “check for modifications” and then click to commit.
  If the check for modifications is done in the folder then is again says there are no modifications.
  We have also tried to create a fresh working copy and commit from there, however the problem occurs here too.
  We have tried copying the svn file incase it was corrupt but this did not help.
  We use the SVN icons to show when a file has been modified – these icons are still working correctly.
  We have searched for an answer to why this has happened and how to fix. Please could anyone spread any light on the matter.</p>