Ok, Let me see if I can do this correctly.
I am running Logos 8.0 SR-2 (8.0.0.0591)
The computer is a Mac Pro Mid 2010
The O.S. is El Capitan 10.11.6
2 x 2.66 GHz processors (12 cores)
32 Gig Ram
12 TB total Drive space with the boot / Logos drive being 3TB. 1.37 TB free space on that drive.
2 ATI Radeon HD 5770 Vid cards.
In the Highlights tool.
When I try to change the target notebook, Logos will simply close with no warning, then the Mac Crash report screen will display.
Attached is a screen shot just before the program crashes and I 'think' I have properly attached the logos crash logs.
Please let me know if I need to provide any other information.

5282.LogosLogs.roycottingham.20181122-011054.zip