It just isn't user friendly.... they should have built it off of inventor as far as 3d modeling is concerned. Its very frustrating.... i go to put on a fire damper and it tells me there there is a constraint conflict with something on the other side of the layout... so i delete that duct and and redraw it and put the fire damper on with no issues... why does it do stupid things like that.
What kind of response are you expecting? We all wish we knew.
We have all been there and some (hence this post) are still dealing with it. Eventually you'll put in the back of your mind and swear under your breath.
I believe the issue is the constraints. Sometimes forcing rules on users takes away from productivity. This is a bidirectional query software, so if something doesn't add up it isn't going to work. Many time the reasons why they do not add up, makes no sense and are unexplained, but you have to use it regardless. Personally I think RMEP is a band-aid on a band-aid on a band-aid. I wished they could start over, but it isn't going to happen. Keep on keeping on. It gets better as you progress and as the program progresses with every release.