IntelliJ GUI editor refuses to add custom component from the palette
Answered
I created custom component extending swing's JPanel and tried to add it into my form. I tried adding it to the palette, binding an another form to it, and... nothing happens. Just no error messages or dialogs, no reaction at all when adding this component to the form. All compiler versions are set to 9.
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UPD: And when I'm trying to manually edit .form file and insert my custom component, I still get "Unsupported version error" in editor (the whole project, however, is compiled and seems working).
Solved by setting project and bytecode versions to JDK 8.