* Run **getPlugins.sh** / **getPlugins.bat** from the project root directory to check out additional modules.
* Make sure you have the **Groovy** plugin enabled. Parts of IntelliJ IDEA are written in Groovy, and you will get compilation errors if you don't have the plugin enabled.
* Make sure you have the **UI Designer** plugin enabled. Most of IntelliJ IDEA's UI is built using the **UI Designer**, and the version you build will not run correctly if you don't have the plugin enabled.
* Run **getPlugins.sh** / **getPlugins.bat** from the project root directory to check out additional modules.
* Make sure you have the **Groovy** plugin enabled. Parts of IntelliJ IDEA are written in Groovy, and you will get compilation errors if you don't have the plugin enabled.
* Make sure you have the **UI Designer** plugin enabled. Most of IntelliJ IDEA's UI is built using the **UI Designer**, and the version you build will not run correctly if you don't have the plugin enabled.