I'm using TC 2018 Deluxe. I'm working on a 3d drawing. I have two adjoining 2d polylines, in a separate layer, that I want to make into one. I display only the layer with the 2d polylines. Then, when I go to the 2d Boolean Add command, get the prompt to select the first object and do so, I get the Windows error "ding" and the program freezes. I have to go to Task Manager and end a listed TC 2018 Task (not the actual program) to unfreeze. Then I get no response when I try the 2d Boolean Add command.
The only way I can get any response from the 2d Boolean Add command is to close TC and restart. Then it's the same cycle over again. Doesn't seem to matter in which position the 2d/3d selector is set. No other settings are obviously out of wack.
I finally did a work-around by drawing a new polyline that encompasses both of the initial polylines, then erasing the originals.
I'd still like to know what I'm doing wrong. Any ideas?