I can see that you are very annoyed. That video with this thousands of % to load is a pretty funny error message though.
At same time i dont understand why you get all the crashes. Me myself i have a crash on closing Construct, but because i run vista, the crash is handled flawless. Yesterday i had a crash on trying to frame an animation. But that is about it.
I have no idea what's going on on your system. Could i see the .cap of with those 4 layouts ?
There are some little things that i dont do anymore.
Like, Copy a object, paste it into another layer, and delete the object on the layer where i copied it from. It looks like deleting the first object created with a certain sprite will be the object holding that sprite for all clones and instances. I am not sure of this. But i think thats what happens.
I will not copy objects from 1 layout to another for the same reason.
I will not copy layouts, because i feel its tricky. And i will try to do as much as possible in 1 layout. If i plan to make a openings screen, then i will create that opening layout with a temporary click trough to the next layout, where it all happens.
Maybe you need to, when starting a project, make like 15 layouts at moment you create the direct X game ? 1 or 10 layouts to much will not hurt ?