Scheduler displays blank alert box when refreshed

Hello,

I would like to report an issue I have found when the page the scheduler is on is refreshed in quick succession.

If I reload the page several times (normally more than 3) a blank javascript alert box appears. I have tested this and this occurs in firefox and chrome on Mac OSX 10.6 and Ubuntu 10.10. I have been able to replicate the issue using your online samples for the scheduler.

I am concerned about what might be causing this and the likely hood of this happening in a real world test.

Thanks,

Tim

It is result of invalid xml loading
Can be blocked by

   dhtmlxError.catchError("LoadXML", function(){ });