When opening a .DWG file in the WaterCAD for AutoCAD platform I get an AutoCAD error message that says, "Error handler re-entered. Exiting now.".
1) Copy the original files into a new folder minus the .WTG file2) In Standalone WaterCAD import just the database file (File > Import > WaterCAD Database)3) Saved the file with the same name as the original after importing it in the new folder.4) Open the original file along side the newly created file in Standalone and copy over your color codings and annotations from the original model using the copy and paste feature in the element symbology. 5) Saved the new file and opened it again in AutoCAD.