We are having the same issue. GSS 2.01 (11.0.1.1533). Random tasks are causing the console to crash.
Event log: Event ID 1000, Type: error
Faulting application ngcons.exe, version 11.0.1.1533, faulting module ngcons.exe, version 11.0.1.1533, fault address 0c00213eeb.
It's pretty random, as I can define a task one day, get properties, edit it and run it. Two days later I may get properties on the same task and it crashes the console. Most tasks indeed include a "custom" configuration.
Server is Win2k3 server standard, SP2. Clients are all WinXP machines in a domain, the custom config task applies the names and moves machines to a workgroup.
We'd appreciate some feedback.
Cheers!