It is a weird problem. It seems as if none of locks actually get
recognized. I have a hunch though.
Would it be possible for you to test this again, but this time *without*
any special characters in the url?
The paths right now contain spaces and plusses, each get 'percent
encoded' and there's differences in how Office and sabre/dav encodes these.
If you could test a path without spaces in them, and it works, we at
least know that that's why the problem is happening. Hopefully I'll be
able to create a workaround, but not fully sure yet :/
Evert