In Magister click on the Filter period button crashes Silverlight

[Ferry Toth]

The message is:

Er is een ernstige fout opgetreden.
Magister wordt opnieuw geladen.

Details:
- ManagedRuntimeError
- System.Collections.Generic.KeyNotFoundException: [Arg_KeyNotFound]

Arguments:

Debugging resource strings are unavailable. Often the key and arguments provide sufficient information to diagnose the problem. See http://go.microsoft.com/fwlink/?linkid=106663&Version=5.1.20913.00&File=mscorlib.dll&Key=Arg_KeyNotFound

   at System.Collections.Generic.Dictionary`2.get_Item(TKey key)

   at System.Windows.ResourceManagerWrapper.GetResourceForUri(Uri xamlUri, Type componentType)
- 4004

[Ferry Toth (ftoth)]

(this is after your select the 'grades' page, not the 'agenda'.

BTW I need to use Firefox to access Magister (5.6.19), I won't load in Chrome.