The DAVRepositoryFactory is an internal class used by the SVNKit software, and we have not updated the library (or the SVN connector) in quite some time. Was there an embedded exception or simply more of the message? As far as I know, SVNKit doesn't depend on any other libraries - might it be included in any of the other JARs you're using?
Sorry for the delay, i just came back from holydays!
This error was likely a pre-holydays mistake: i don't remember where i found the modeshape's jars, but when i checked this morning, there was nothing but modeshape code into them.
I compared with my modeshape 2.5.0 jars and found out the jars I used in 2.6.0 B2 weren't "all-dependencies". Stupid mistake, so i redownloaded it and everything is fine now, sorry to have bothered you once again!
Have a good day,
Don't worry about bothering us, because you didn't. We're here to help and answer questions! I'm just glad it was as easy as the solution.