4042 - WM just delete project

I hate this error as hard as you can imagine

Description of error:
This error exists on WM 4030, 4040 and i encount with it a lot of times
While connection of nodes, WM will have not enough memory
And after reload you will see this awesome message, that your project deleted for ever

I even can not send project to developer for analyzis of that problem - becasue file is just empty project with nothing special