Gradle Build fails after upgrade to 2018.2.0b7

Hi,

i just upgraded to 2018.2.0b7 via Unity Hub, removed the old version and started my workspace. Unfortunately, gradel build now fails with the following mesage:

CommandInvokationFailure: Gradle build failed. 

/Library/Java/JavaVirtualMachines/jdk1.8.0_172.jdk/Contents/Home/bin/java -classpath "/Applications/Unity/Hub/Editor/2018.2.0b7/PlaybackEngines/AndroidPlayer/Tools/gradle/lib/gradle-launcher-4.2.1.jar" org.gradle.launcher.GradleMain "-Dorg.gradle.jvmargs=-Xmx2048m" "assembleRelease"



stderr[



FAILURE: Build failed with an exception.



* What went wrong:

A problem occurred configuring root project 'gradleOut'.

> java.io.FileNotFoundException: /Applications/Unity/Hub/Editor/2018.2.0b6/PlaybackEngines/AndroidPlayer/Tools/gradle/lib/plugins/gradle-diagnostics-4.2.1.jar (No such file or directory)

[...........]

So basically, what happens is, gradle is started from the correct directory, but searches a jar in the old one. How can i change that? I couldn't find it in any configuration option anywhere.