Hi Oliver,
It is happened to one of my files so far. What happen was the skp file lost the connection between the old D5 files I made it long time ago. So, I have to click select the D5 files to open and replace the model. I have 2 houses in that file. I also try to separate the 2 houses into 2 files. One got lucky and went through without losing any old setting. but the other still have the same issue as mentioned before. Cannot save and crash.
I am using latest version of D5 Render and video studio driver.