Some legacy Baja source files !INCLUDE SBBSDEFS.INC, but the filename is now
sbbsdefs.inc, which does not match on case-sensitive filesystems (e.g. Linux)
e.g.
BBSLISTR.ZIP:!INCLUDE SBBSDEFS.INC
FORSALE1.ZIP:!INCLUDE SBBSDEFS.INC
FWISH10.ZIP:!INCLUDE SBBSDEFS.INC
GUESS20.ZIP:!INCLUDE SBBSDEFS.INC
NU_SYNC.ZIP:!INCLUDE SBBSDEFS.INC
ONELINE1.ZIP:!INCLUDE SBBSDEFS.INC
ni-sbbs.zip:!INCLUDE SBBSDEFS.INC

This issue was reported via DOVE-Net by Rick Smith.