Vaadin7 project deployment Intellij vs Eclipse comments needed

Hello, I have noticed that deployment of a Vaadin7 project is somewhat spotty depending upon the project complexity. If I create a simple Vaadin7 project with only a single package the deployment works OK. Notwithstanding, if I create a Vaadin7 project with a ordinary Java package in addition for testing the deployment will not happen on Eclipse Kepler but deploys flawlessly using Intellij. Any comments as to why? I’m asking this because the Vaadin7 folks are overwhelmingly Eclipse oriented especially in the area of addons. The suggestion with using Eclipse for addons makes deployment of newly created plugins much easier. Again comments welcomed.