:bump:
Figured out a workaround for the "DOpus 4.16 opens its config screen in a low-res, non-scrolling (read: useless) screenmode" bug. The definitive solution is to use 4.17, as discussed above, but if you really want to use 4.16 for some reason, here's what you can do:
Increase the number of colors on the Workbench screen.
Having just prepped a new A4000, I discovered that the bug appeared when my Workbench was set to NTSC:HighRes, 8 colors, but not at 256 colors or PAL:HighResLaced at 256 colors. I didn't do any further testing before replacing it with 4.17, so I don't know the minimum number of colors required to avoid the bug (info that would be useful to non-RTG ECS users). I also didn't test if a HighResLaced screen at 8 colors would work.
Possible explanation: There was a bug in 4.11 (and probably earlier) that would hang/crash the machine if Workbench was set to 256 colors and the config screen was opened. It was fixed pretty early in GPL development, but my guess is that fixing that bug introduced this one. The history files for 4.17 don't seem to address it explicitly, but the change to open the config window on DOpus' screen takes care of the problem.