[horde] Returning HTTP 500 while handling Sync command

[Andreas Mauser]

Hi,

I get the following error every few minutes and cant explain where it  
comes from:

Nov  8 20:13:34 web HORDE: Returning HTTP 500 while handling Sync  
command. [pid 9974 on line 159 of  
"/var/www/html/mauser.info/mailoffice/rpc.php"]
Nov  8 20:13:34 web HORDE: Error in communicating with ActiveSync  
server: Protocol error [pid 9974 on line 162 of  
"/usr/share/pear/Horde/Rpc/ActiveSync.php"]
Nov  8 20:13:34 web HORDE: #0  
/usr/share/pear/Horde/ActiveSync/Request/Sync.php(209):  
Horde_ActiveSync_Request_Sync->_parseSyncFolders()
Nov  8 20:13:34 web HORDE: Buffer contents:  [pid 9974 on line 162 of  
"/usr/share/pear/Horde/Rpc/ActiveSync.php"]


But the activesync works fine for all the accounts and different  
phones. What is this is? :)

Thank you,
Andreas