Well my question is pretty simple, how do I start two instances of IntelliJ (community edition). When I have one instance started and I try to start another one, all that ha
You need to configure each instance to use its own folders for config/plugins/system locations by editing idea.properties
file on Windows/Linux and Info.plist
on Mac. You can find the details in FAQ.
Note that normally it's not necessary since you can open multiple projects in different IDEA frames within the same instance using File | Open or Open Recent.