I just solve the same problem that you are facing.
First, close Genymotion to link the application / emulator
Second, uninstall the Genymotion plugin for IntelliJ
Third, install the Genymotion plugin for IntelliJ
Finally, run the Genymotion emulator, then raise the adb console, enter the adb devices to see if your device is listed.
If so, go to IntelliJ and run the application with the Target Device parameter set to> Show chooser dialog.
Now you can see your Genymotion emulator in the list of running devices.
Hope this helps.
(installed IntelliJ12 on Win7)
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