It's been reported that the "unsupported status csCode: 8" error message is
caused by applications that try to write a "SCRN 0" resource to the System
file.
Further research reveals that the csCode: 8 is not included in the current
supported control status code list (video.h) of the A/UX toolbox video
driver. The following status codes are supported under A/UX 2.0:
#define cscGetMode 2
#define cscGetEntries 3
#define cscGetPages 4
#define cscGetBaseAddr 5
#define cscGetGray 6
#define cscGetVideoDefault 9
If any Macintosh application, like "After Dark 2.0", tries to use some
video features not supported in the above list, it might have this problem
too.
Note: After Dark is compatible with A/UX 3.0 because A/UX 3.0 supports
the needed video calls.