Some emulators kick back to main menu

Still having problems getting most emulators to actually run.
The ones already installed…SFC, GBA, MAME, PSX, already work, of course.
The only one I’ve gotten to work of the ones I installed is Stella, for the Atari 2600.

I copied the action.config information from the Atari to the others, making the obvious changes and they won’t work. At first, when I start each up, it asks if I want to set up the engine automatically.
I select Yes, as always.

After that, when I select the game to play, it goes to the loading screen for a few seconds. Then it goes to a black screen for a second or two, then it goes back to the main menu.

As you can see here, the two action.config files are identical, except for the pertinent information. What am I doing wrong?

Atari 2600:
ROM=/home/cpi/games/2600
ROM_SO=/home/cpi/apps/emulators/stella_libretro.so
EXT=a26
LAUNCHER=retroarch -L
TITLE=Atari 2600
SO_URL=http://buildbot.libretro.com/nightly/linux/armv7-neon-hf/latest/stella_libretro.so.zip

Colecovision:
ROM=/home/cpi/games/Coleco
ROM_SO=/home/cpi/apps/emulators/bluemsx_libretro.so
EXT=col
LAUNCHER=retroarch -L
TITLE=Colecovision
SO_URL=http://buildbot.libretro.com/nightly/linux/armv7-neon-hf/latest/bluemsx_libretro.so.zip


UPDATE:

Okay, so I went straight to that URL and downloaded all of the zip files. Unpacked them and copied both files over to the Gameshell.

That fixed most everything.

Except for the Intellivision, 32X, and Sega CD…and I think one more…I forget.

Still getting the black screen and dump to main menu.