Folks - I'm using Win7 and ArcGIS 10.1 SP1. I have a model that I built years ago in 9.3.1 that has always worked flawlessly. Now that model crashes ArcCatolog when it tries to add a field to a featureclass that has been copied from one FGDB to another FGDB.
I've tried saving the old Toolbox to a v10 Toolbox and have completely rebuilt the model in 10.1 and still it continues to crash. When I look at the FGDB where the FC was copied to - it displays a geodatabase table and not a featureclass. I'm guessing that is why it is crashing. Why then would both tools (i.e. Copy and Copy Features) produce a table when the source data is a featureclass? The feature class in question displays properly in both ArcCatalog and ArcMap so I don't think that the original is corrupt.
Any ideas or suggestions?