It is my suspicion based my useage since way back, and on several years of beta testing that Designcad is a collection of more and more new features cobbled onto the backside of a very ingenious old program that is years and years out of date, and of which no one really knows how it works.
Every time they change programmers, which they did at the time the troll left us, it takes them forever to figure this out. The only real solution would be for them to recreate right from scratch, but I think to do that without breaking half of the good stuff buried in there would be a major undertaking.
Maybe that is what the new guys are trying to do....
You could try to hibernate for a few months or years and check back here then
It is of course also possible that they have just been very busy and a new version is coming out any day now.