geoprocessing and background processing issue

Discussion created by jgershonw1 on Feb 7, 2011
I have developed a VB.NET GP tool by implementing the IGPFunction2 interface.  It worked great in ArcGIS 9 and not so well in ArcGIS 10.   The problem is that when geoprocessing background processing is enabled, I cannot get my tool to add a derived feature class layer to the current map.  I am using GPUtilitiesClass.GetMap() to get the map and adding the layer to it.  This works with background processing disabled, so I conclude that objects created in one process cannot be used by another.  How can I get around this problem?