MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
how do you unclog the nozzle? maybe to hot?
check if there is enough cooling, and the feeder gear is clean.
Skeinforge is not very easy to configure, Print-O-Matic seems to be easy but in most cases you're better with manual control.
maybe you can use the makerbot software.