What program do you have set to use by default with DWG file formats?
Do this (works for AutoCAD, DTV's parent program):
https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/DWG-file-type-associativity-in-Windows.html
Do this (works for AutoCAD, DTV's parent program):
https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/DWG-file-type-associativity-in-Windows.html