Issue
When opening Control Expert v15.3 and the DTMs update it returns: “Warning: 0_2CANopenComm.USB_to_CANopenC000.1: DTMCatalogBuilder: AddDTMInfoToCatalog failed!”
Resolution
Uninstall the CXM DTM from add/remove programs then run setup.exe from the CXM Gateway DTM folder that is part of the v15.3 installation files (iso).