Any require statement that refers to any global module failed. The module is installed globally (-g) and regular node in command line run just fine. redis is failing, mongodb is failing and so on. I didn't find any configuration options for that. express working just fine, but not the other modules.
after sudo npm install -g redis for example, nodeclipse can't find it. the node command line, works fine.
run both with regular user.
Have you just 'npm install' those module?
Give more information in your questions, as it is impossible to tell what is different in your environment.