ResolutionServer dies when setting positions

[trquinn]

If a group is defined using mouse commands in the client, and then the Group
Manager is used to reset position limits, the ResolutionServer dies.

------- Comment #1 From Thomas Quinn 2007-10-01 21:52:13 [reply] -------
The Interactive client uses the CreateGroup CCS call which is tied to the
makeGroup() method in Main, which in turn calls the Worker::makeGroup() method.

makeGroup() uses make_AttributeRangeGroup(), but doesn't check for an error
returned. My guess is that this is what causes the problem.

The right way to fix this is to get rid of the makeGroup() method, and interact
via the python createGroup_AttributeRange() command.