ATTENTION: There was reported issue of "#72 All nodejs apps fail to run after upgrade to 0.5". If you have already run into the problem. 1) let us know by confirming or raising new issue (we need to know exactly what OS, Java version, Eclipse version is affected. Currently only x32 Windows on JDK 6 and x64 Windows on JDK 6 are confirmed.) Solutions: A) Install latest JDK B) Downgrade to 0.4 B.1) Uninstall Nodeclipse 0.5 (only 1 feature entry) via Help -> About Eclipse -> Installation details, select Nodeclipse, then Uninstall.. button B.2) install 0.4 from update site http://nodeclipse-1.github.io/updates