When I try to load the attached corner cabinet (which was created in version 4 or 5) directly into the cabinet editor via the load screen, eCabinets hangs at the “Applying Part Editor / Constraint Data” step.
If I load the cabinet into a batch cabinet list or into a room layout, then click on the cabinet to take it into the cabinet editor, it loads OK, but I'll be buggered if I can get to too load direct from item menu into cabinet editor.
I placed your cabinet in a room and took it to the cab editor from there, opened construction settings then exited construction settings to re-generate the cabinet. (this took a while) I then saved the cabinet from here, closed out the room and I can now open your cabinet fine in the cabinet editor.