Install add on Bproc

Hi,I’m trying to install the bproc trial version, and this error is happening:

Could not initialize class com.haulmont.studio.intellij.account.auth.OAuthDataStoreService

How can I solve it?

Hi,
Which IDEA or CUBA Studio version do you use?
Can you please download the latest version from the site, or download latest IntelliJ IDEA?

This is a known error occuring with some old IDEA versions.