[kronolith] Problem sync with kronolith/sunbird/iCal

[Marc Carmier]

Hello,
I've installed horde/kronolith stable with cvs (FRAMEWORK3 tagset). I'd 
like to be able to synchronize the mac/pc calendar applications with 
kronolith.
After lots of googling, I've found that I must use the adress :
https://myserver.mydomain/horde/rpc.php/kronolith/myloginname.ics

But I wasn't able to see any of my events of kronolith in my sunbird.

I've try to use this adress in a web navigator and the only things I was 
able to obtain is a zero byte file.

Where can I find the reason of this ? I don't see anything in the logs. 
Any other idea ?

Sincerely,
Marc Carmier