[horde] greetings - carddav and caldav?

[Tim Streit]

Greetings to all ;

rpc.php - caldav / carddav.  When trying to play with, and I was having some trouble with my Mac (10.8.3) and contacts / calendar.  I had them setup as carddav and caldav, and I can view them fine in the browser.   But I keep getting an error (The operation couldn't be completed. (CoreDAVErrorDomain error 500.)).  I can't sync up or down.  On calendar, it uploads a few, then it stops with an error - a write permission error if I recall.  I can't reproduce it at the moment. 

Whats odd is that I have SabreDav installed and working fine with my main account -- and am looking to convert over to horde (integration) from round cube.  But I can't seen to figure out where to track down these issues with carddav/caldav.

Any ideas or tips guys I'd appreciate.

Thanks,

Tim