Changes have been made in Git (master):

commit b790cad1397c2e49c0c662ce8b7e9cce4ee443d4
Author: Jan Schneider <jan@horde.org>
Date:   Thu Nov 29 19:23:42 2012 +0100

     [jan] Fix receiving resource calendars in dynamic view (Bug #11776).

  kronolith/docs/CHANGES                |    1 +
  kronolith/lib/Driver/Resource/Sql.php |    7 ++++++-
  kronolith/package.xml                 |    4 ++--
  3 files changed, 9 insertions(+), 3 deletions(-)

http://git.horde.org/horde-git/-/commit/b790cad1397c2e49c0c662ce8b7e9cce4ee443d4

Changes have been made in Git (master):

commit 0325a77d36bf84cae53c6730ef30220c103ebd31
Author: Jan Schneider <jan@horde.org>
Date:   Thu Nov 29 19:07:31 2012 +0100

     Fix strict notice (Bug #11776).

  kronolith/lib/Driver/Resource/Sql.php |    6 +++++-
  1 files changed, 5 insertions(+), 1 deletions(-)

http://git.horde.org/horde-git/-/commit/0325a77d36bf84cae53c6730ef30220c103ebd31

Trying to view the contents of a resource calendar using the WebUI 
results in an error message: "Error when communicating with the server".

The same time, php logs this error:
"PHP message: PHP Fatal error:  Call to undefined method 
stdClass::toProperties() in 
horde/kronolith/lib/Driver/Resource/Sql.php on line 113"
request: "POST /services/ajax.php/kronolith/listEvents HTTP/1.1"

And horde logs this:
HORDE [kronolith] PHP ERROR: Declaration of 
Kronolith_Driver_Resource_Sql::delete() should be compatible with 
Kronolith_Driver::delete($calendar) [pid 96198 on line 18 of 
"horde/kronolith/lib/Driver/Resource/Sql.php"]

Getting free/busy information for this resource works like a charm.

Any hint to solve this is much appreciated.