This is my big problem, I am using a relatively recent version, points to the previous post with the version/build number, and I didn't/don't use tortoise when I develop in SD3. this issue happened most recently when I added a project through SD, and then tried to commit said project. ALL IN SD3 version/build as specified in the previous post.
I have just installed the latest of the builds I could get as of yesterday, so I will update you when I do more with it. In any case, this isn't a simple issue of conflicting tortoise and SD versions anymore, the last time it happened there was no TortoiseSVN involved at all, it was all SD. I had to use TortoiseSVN to fix it, and get my new stuff commited, but the problem occurred in SD itself completely independent of my TortoiseSVN.
So, unless there is some sort of dependency on TortoiseSVN in SD, I don't think my lower version of Tortoise should effect SDs ability to commit a project that was entirely created, added, modified, and attempted to commit inside of SD.