I was faced with problems with the actual version of OpenMHP 1.0.4 (the free open source project for application development based on DVB-MHP).
There was no TV screen visible and I fixed the problem with adjusting the openmhp.properties in the openmhp/static directory.
The solution was to add the following line:
additional_classpath=d\:\\programme\\MHP\\openmhp
You have to insert the path to your ophenmhp installation and everything will work fine!
