I had the same problem. I found out that my profile wasn’t in the repository’s list of allowed users. Talk to the admin of the repository to see if you have rights (check the repo’s .conf file).
This thread talks about the same problem,
“https://www.nabble.com/Upgraded-to-1.5,-can’t-commit.-VisualSVN–td18076671.html”
and this link talks about how to configure a repository
https://tortoisesvn.net/docs/release/TortoiseSVN_en/tsvn-serversetup.html#tsvn-serversetup-apache-4
Hopefully this helps you guys.
