Modelbuilder is damaging data

Discussion created by Jerry_G on Jul 23, 2012
I created a model that I have been using for about 1.5 years. Recently after installing SP5 I find that sometimes when I feed a set of points into the model I get error 99999.  After I exit out of the error window the layer in the TOC that I was running the model on gets a the red !. When I check arccatalog I see the layer is still in the file geodatabase and I have to repair the layer then try again. Sometimes I will have to export the layer and rename it to get it to work. 

Anyone have any suggestions?