I downloaded Jahshaka 2.0 recently and it hasn’t been working…
I open it and the splash screen comes up and goes away…but it doesn’t load 
Pops up and goes away…
Really? what OS are you running? It runs fine for me on Win XP Pro.
if you run it from linux, try to run it from console. That way you can easily intercept why it’s not running. I got this problem too once, I just don’t have a library it needed. Also as i recall jahshaka won’t run with desktop shortcuts in KDE or GNOME, not sure why.