Hi All
If the \os2\sdd*.dll files are SNAP related, which I think they are, then there has been some code changes between the builds released with ArcaOS 5.0.4 and 5.0.5 which may account for the missing "Wide Resolution" and "4 x 3" checkboxes in 5.0.5 and 5.0.6
I have 5.0.4 (which has the above checkboxes) installed on H:
[H:\OS2\DLL]dir sddvc*.dll
 3-06-18 12:57p        68,143      0 a---  sddvcfg.dll
 3-06-18 12:57p        40,991      0 a---  sddvcmri.dll
5.0.5 (above checkboxes missing) is installed on L:
[L:\os2\dll]dir sddvc*.dll
14-09-19  7:46p        67,727      0 a---  sddvcfg.dll
14-09-19  7:46p        40,799      0 a---  sddvcmri.dll
Thought I'd have a look at the url provided in Marttins post 
https://mantis.arcanoae.com/view.php?id=3020 but that just gives me an almost blank page with the text "Access Denied" and a link [Proceed] which takes me to the bug tracker home page. Searching for issue 3020 results in the previous "Access Denied" page loading. Guess that bug has gone private?
Regards
Pete