This is in FileMaker Pro Advanced 18.104.22.168 on Windows 7 Enterprise Service Pack 1. File Hosted on Windows Server 2008 R2. Client is on a HP EliteBook, Intel i5-3427U 4 GB RAM 32 bit operating system.
Issue: Navigating from a List view with a Portal in the footer to another List View with a Portal in the footer and then back, causes FileMaker to crash.
Expect: Navigating from layout to layout will not cause system to crash.
Workaround: Go to an intermediate layout - in Form View, pause script 1/10th of a second, go to List View layout.
Notes: I've found that when I first go the new layout with a portal in the footer, it seemed to be OK. However, when navigating back to the original layout, also a List View with a portal in the footer, the system would crash.