try this on:
bad command line switch seen

or file not found ... (atari).a26
which is odd cons
dk dir
[Dirs]
***Enter all your rom paths... Just like you do in a mame.ini
roms=E:\mame\roms;E:\z26\roms;E:\zinc\roms
***Put These in as a base folder. I.E. If your snaps are in "e:\mame\snap\"
***then the entry should be: "e:\mame\"
Primary Artwork Dir=e:\mame\
Additional AW Dirs=e:\z26\;e:\snes\
***The alternate elements allow you to have two more artwork elements besides the usual.
***Simply put the name of the sub folder (like "\controls\").
***Note: Skins must have an alt-element slot defined for this to work.
AltElement1=\cpanels\
AltElement2=\misc\
[startvd]
[path]
logo=Mame.png
caption=Mame
useclones=0
searchstrings:5=MAME
filters:6=*mature*;9=*Working No*;6=BIOS
[/path]
[path]
logo=Atari.png
caption=z26
useclones=0
searchstrings:5=Z26
filters:
[/path]
[path]
logo=zinc.png
caption=Zinc
useclones=0
searchstrings:5=Zinc
filters:
[/path]
[/startvd]
z26.cfg
[Config]
extension=.a26
path=E:\z26\
exe=z26.exe
send rom path=1
send exit keys=0
command line options=
emulator is on a cd=0
roms are on a cd=0
Emulator Volume Label=
Roms Volume Label=