Can't uninstall VP for Windows 64bit 10.0 20120806

I want to uninstall VP for Windows 64bit 10.0 (20120806) full version and get following error:
java.lang.NoClassDefFoundError: com/install4j/api/context/RemoteCallable (see attachment)

There is no other version on the machine. Please help. Thank you in advance.
vpuninstall.png