I have a weldment sketched part and I have downloaded the ISO pack from within the software. When I choose any ISO > Tube (Square) the size drop down won't let me select anything and this dialogue opens.
I have tried redownloading the pack and replacing the files but still doesn't work.
The other types work OK, like angle sections and channel etc. Just Tube square and Tube rectangular. The drop down menu appears for a split second and shows the list but dissapears again. If I use the keyboard I can select a profile but when its selected and confirmed, the dialogue appears again as below.