Strange exception from unknown Idle event (RH6 SR34)

Hi @dale,

using Rhino 6 SR34, i frequently get a continous running error which fires hundets of times per second and forces me to close Rhino 6 so i can continue to work. The error looks like this:

Rhino.Runtime.DocumentCollectedException: This object cannot be modified because it is controlled by a document.
bei Rhino.DocObjects.RhinoObject._InternalGetConstPointer()
bei Rhino.Runtime.CommonObject.ConstPointer()
bei Rhino.DocObjects.ObjectAttributes._InternalGetConstPointer()
bei Rhino.Runtime.CommonObject.ConstPointer()
bei Rhino.DocObjects.RhinoObject.get_Id()
bei System.Linq.Enumerable.WhereSelectArrayIterator2.MoveNext() bei System.Linq.Enumerable.<IntersectIterator>d__701.MoveNext()
bei System.Linq.Enumerable.Any[TSource](IEnumerable`1 source)
bei Commands.UI.UserStringsPanelControl.RhinoApp_Idle(Object sender, EventArgs e)
bei Rhino.RhinoApp.OnIdle()

Note, i do not create any events on my own with my code and i do not have anything in the idle processor. The error comes up out of the blue after modelling a while. So far i’ve tried to disable all PlugIns which do not ship with Rhino but that error still pops up quite often. Is there a way how can i identify the source ?

thank you,
c.