FYI: OK ... I did now confirm that the "pbejbclient12x.pbd" class code is reading the JVM ClassPath from the following registry entry ...
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Sybase\PowerBuilder\12.6\Java\PBIDEConfig\PBSysclasspath
So .. If you do not supply a proper ClassPath in the CreateJavaVM () method's 1st argument and the above registry entry is missing or points to an erroneous location .. then the following message will occur ...
HTH