I just downloaded and indexed the 4.0b et.al. and when I go to load a specific layout, which is rather loaded up with resources, Logos is crashing. 
Now the interesting part is this, 5 out of 5 times that I have attempted to load that particular layout, it has crashed and 5 out of 5 times that I have started Logos with the log active, it has loaded and worked.  It is like 4.0b KNOWS!  I have checked and the program processes are shutting down between starts and the layout worked ok under 4.0a.  
Any grand insights?
Rick