AppenginePlugin unsupported major.minor version 51 error importing gradle project in IntelliJ on a mac

Question

Failing to import project. Gives Unsupported Major.Minor version 51 error when importing from build.gradle

Answer 1

(copied from another solution)

Solution:

Solution for me was to edit /Applications/IntelliJ IDEA 14 CE.app/Contents/Info.plist

Find these two lines towards the bottom:

<key>JVMVersion</key>
<string>1.6*</string>

Change it to 1.7*, so that it looks like so:

<key>JVMVersion</key>
<string>1.7*</string>

Then restart your IDE.