Hi
I sympathise with you here.
For me this is the one big problem with all the versions of Magix edit pro.
I've changed PC three times hoping better PC's would run this software better.
I get this problem every time I have a long video.
I can't understand how magix cannot address this question clearly nor explain why their software doesn't work properly.
Surely it should be able to handle large video's or multiple projects.
The software seems to be able to handle it up to a certain point and then fails as you try to burn it. They should forget about bringing out new versions until they fix this problem.

Kind Regards
Fergal