I've been using IsoDraw 3 to 4 yrs now, and I've put up with this problem and feel it is probably just an IsoDraw quirk. It concerns picking and editing element points, it seems depending on the element point position withing all the other elements it can be very difficult to pick on a point and move it or even to pick it at all. If the object is filled it is impossible to pick certain points within the object until you turn the fill off.
Anyone else having that problem, or is it just me.
Could it be the higher resolutions we are using now, the points seem small on screen and I feel the program will not let me zoom in tight enough a lot of times.