Repository Has Not Been Enabled To Accept Revision Propchanges

Solution

To correct this, I needed to create a file in the "hooks" folder of my Subversion repository. On my system, it was located at C:\svn\repository\hooks. I created a file called "pre-revprop-change.bat", and I set the contents to this:

rem Only allow log messages to be changed.
if "%4" == "svn:log" exit 0
echo Property '%4' cannot be changed >&2
exit 1

This solution was suggested in the TortoiseSVN documentation.