Hello,
this may be an old problem and I already tried to find a solution in the internet but couldn't find a usefull hint. After years I decided to continue my Netbeans project. In the meantime, the Pack200 Program from java.util seems to have been removed from the new JDKS. Failed to execute goal org.apache.netbeans.utilities:nbm-maven-plugin:4.3:cluster-app (default-cluster-app) on project Netcrystals-application: Execution default-cluster-app of goal org.apache.netbeans.utilities:nbm-maven-plugin:4.3:cluster-app failed: A required class was missing while executing org.apache.netbeans.utilities:nbm-maven-plugin:4.3:cluster-app: java/util/jar/Pack200 There must be a very easy solution to tell Netbeans not to use it while compiling. A maven parameter perhaps? Honestly speaking, I don't really understand the problem at all. Why is this class demanded? Thanks. Regards, Klaus