Hi Monica,
Thank you for your interest in Syncfusion Products.
Issue 1: ('__pendingCallbacks[...].async' is null or not an object")
---------
The issue mentioned here is suspected to be a defect and we have sent this to our development team for more analysis. We will update you once we get back from our development team.
Issue 2: (the diagram is not refreshed)
-------
I am afraid that I was not able to reproduce the issue. Please refer to the following steps that I tried to reproduce it.
1. Created a sample with AfterCallbackScript
2. But the diagram is refreshed and the nodes are dragged to new position.
Also I have created a simple sample to test this issue and it is available in the following link.
http://www.syncfusion.com/Support/user/uploads/NetworkModel_923895b.zipPlease have a look at the above sample and if still the issue exists, could you please try reproducing it in the above sample or send us the reproducing steps so that we could sort out the cause of the issue and provide you a solution?
Thanks,
Melba