This is the same post as https://intellij-support.jetbrains.com/hc/en-us/community/posts/205841949-Dart-plugin-doesn-t-install-in-CLion-but-works-elsewhere.
I couldn't comment to reply on my own post but I have provided a screen shot here. I was using the latest CLion 1.2.4 available at that time.
I've downloaded the Dart plugin 143.1566 and installed it successfully in PyCharm. https://plugins.jetbrains.com/plugin/6351 Now I am trying the CLion evaluation version and installing the same plugin gives the error message "Plugin 'Dart' is incompatible with this installation". The Dart plugin page (link above) lists CLion as a supported platform. Is this because I'm using CLion evaluation or is the Dart plugin actually not supported in CLion?