Something new started today. When I go to replace an xref or delete it altogether, DataCAD crashes out. This happens in multiple drawings. Any suggestions?
1. Try using Layer/Erase to erase the layer contents but not the layer, then re-load the xref onto the empty layer.
2. Another option is to use the File/Repair Tool on the xref file as it may have some corrupted entities if it's causing crashes across multiple files (if DC19 includes the Repair Tool),