Wow I solved the issue and if I told you what it was you will think I was some jackass.
When I went into the plugin folder I noticed all the extensions for the emulators ended in .nds but when I downloaded TempGBA it had a .plg extension. I changed it to .nds thinking that .plg was wrong and this is why I got a dark screen everytime. Sorry for wasting your time *facepalm*
P.S. Can GameYob play games on fullscreen and if not are there plan to add that later on? The small screen is kinda hurting my eyes a bit.
When I went into the plugin folder I noticed all the extensions for the emulators ended in .nds but when I downloaded TempGBA it had a .plg extension. I changed it to .nds thinking that .plg was wrong and this is why I got a dark screen everytime. Sorry for wasting your time *facepalm*
P.S. Can GameYob play games on fullscreen and if not are there plan to add that later on? The small screen is kinda hurting my eyes a bit.