When moving from 2.611.45 to the latest 2.717.45 ASP.NET AJAX binaries, we are experiencing a problem with the client-side drag ('move') of appointments. Repro steps: * Unpack the attached MVC project (bare-bones...does web-service binding on an XML document). Run the project (just go to the /Home/Index action). You should see the RadScheduler there. * Create an appointment of AT LEAST 90 MINUTES duration. This should succeed. * Drag the appointment up/down. I have included a piece of sample JavaScript which prints out the eventArgs.get_targetSlot().get_startTime() value. Expected results: * The logged value coincides with the visual position of the start of the appointment while it is being dragged. Actual results: * The logged value is offset by a constant amount compared to what is being shown on the Scheduler during the drag. For example, the appointment will appear to be shown at 12:00 but the value retrieved in script will be 12:30. This only seems to be reproducible for appointments of 90 minutes or longer. It does not occur with your 2.611.45 binaries. I noticed that you guys changed your implementation of client-side methods like _startDrag, _raiseMoveEnd, _finishDrag etc in this latest release...it might have something to do with that, but I didn't have time to go debugging your script. (Note: The attached zip is only a zip of the cleaned project file. The only non-standard MVC4 assemblies are your Telerik assemblies, so you'll just have to fix up the path to those so that the project builds.)