Plugin for IntelliJ IDEA
On mac, if you can't run it in intelliJ try the following command in Terminal Window run again.
sudo chmod 755 .idea/run
Make sure you run the above command in the project root directory.
You could also try the above command in the intelliJ plugins directory which will work for all projects:
sudo chmod 755 /Users/xxx.xxx/Library/Application Support/IntelliJIdea15/haxe-checkstyle/classes/run
Make sure you use the correct path to the plugins directory of intelliJ.