Errors starting maptreeserver

["Pretorius, Vynita" <VPretorius@fnb.co.za>]

Hi All


We are running Netview/AIX ver 601 on AIX 4.3.3
We have just upgraded from 6.0 

The problem is that when a second map(GUI) is opened we get the following
errors and they come through fast and furiously, what are causing these
errors?.
The first person to open the gui does not get these errors. It does not seem
to matter if the map is Read only or Readwrite. The map still opens and
appears to be okay.

Starting maptreeserver
JNI panic: JNI received a null class
        at com.tivoli.netview.maptree.server.OvwEventDispatcher.run(Compiled
Code)

Thanks
Vynita