android - Kotlin library 'classes.jar' has an unsupported format. Please update the library or the plugin -

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this message appears on project sync.

i've tried clean , rebuild project, no success.

i'm using latest plugin version 0.12.275, "org.jetbrains.kotlin:kotlin-gradle-plugin:0.12.213" , "org.jetbrains.kotlin:kotlin-stdlib:0.12.213"

i've tried stable version 0.12.200 both plugin , library, same error.

i'm using android studio ai-141.1972460 (canary channel).

looks problem in *.aar lib, included in project - compiled old version of kotlin. i've upgraded libary latest kotlin version , works now.


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