ok, I really want to help with your issues with romlister, but you keep moving the discussion thread around on me!

Steps to make a MALA list in romlister build 13 with only vertical games:
1) start romlister.
2) open tools and settings and build a merged file. Tutorial is here:
http://wiki.arcadecontrols.com/wiki/RL_tutorial_merge3) check the "vertical only" checkbox under monitor orientation.
4) press the "go!" button. - after a bit the "working list" dialog will appear with your roms in them. Do a casual search through there to see if you can find any known horizontal games. If you do, then there is something wrong and you should post the text from your -find window here for me to see it.
5) In the "working list" window, select mala gamelist in the dropdown box and press "save list to file"
6) a popup window appears asking for a name - give the list a unique title
7) select a file to save your list to. Save it in your mala folder.
Now, in your mala folder, you should see a program called "malagamelist.exe" launch that.
1) open the file you just created with romlister.
2) click on gamelist
3) go down to "remove brackets from name->All" the rom names should now be cleaned up.
4) save the list and exit.
Now launch Mala
1) right click on the mala screen->select game list
2) find your new list there, and select it.
tada!
it does work-really. I'm using romlister and mala and I have a vertical cab, and I just followed these steps and it worked as well as could be expected.
If you get different results, please post your exact details.
-jeff!
edit: changed "without vertical" to "only vertical" oops!