bbPress.org

I tried several other tests.

Test 1: I deactivated WP Super Cache and activated bbPress. I cleared cache. The white screen with 500 error occurred immediately.

Test 2: I deactivated both WP Super Cache and bbPress. The home page comes up and articles can be viewed. The root page for the forums can be viewed, but the individual forums are not displayed.

At this point, I reverted back to WP Super Cache active and bbPress not active.