Could not execute application

I keep getting this error. I'm new to the game and am unable to actually do anything since the tut says the first thing I need is a banking script from the store which I don't have. I would get it but for some reason the store does no load anything same with use pages. I can get to the search but that's it so far.
"Could not execute application on port 0. This could mean a program is missing on a default port."\
Any ideas?