ContributionsMost RecentMost LikesSolutionsRe: SoapUI 5.5 (Open Source) Installation error on Windows Server 2012 R2 - NoClassDefFoundError Hi, Did you got the solution. I am getting the same issue. Thanks Jp When i try to install soap ui 5.5.0, i am getting install4j error java.lang.RuntimeException: java.lang.NoClassDefFoundError: com.install4j.runtime.beans.screens.SystemFormScreen