Instead of click on a drawing, click on Cancel and then go to File up in left corner and Select the file from there.
When you do so, look if there is 2 files with the same name standing just below each other, if there is go to the place where you save the file first and delete the .dwl file, it will have same name as the original drawing only end with .dwl, like in "drawing_a.tcw.dwl"
If that not help, run the Install file again and do a Repair, you will also find this option in Windows "Apps and Function" if you dont have the installfile nearby.
Last option is to delete the Built-in folder, that will take away all your personal setting and when you start TC again after that it will be with factory settings and you will need to load your cfg (UI), set template etc to get it back to your normal.
V18, V19, V20, V21, 2015/ 16/ 17/ 18 Pro. Platinum
Deluxe V20, V21, 2015/ 16/ 17
Windows 10 Home Premium 64 bit, 32 GB
NVIDIA Geforce GTX 780m, 1 GB