Since everyone seems to enjoy this game very much, I just dropped by to say the above post was only relative to driver problems, and it was never an error on the developer's end.
There are a lot of forums sharing just about the same discussion, about RL/indie titles and incompatibility with certain driver software. For example, hundreds of people have flooded Minecraft forums, complaining they couldn't start the game due to some OpenGL error.
See, that's a driver issue. Both M'craft and P'Dungeon use Java, which relies on up-to-date OpenGL drivers. However, both these games fail to start (miserably) if your GPU drivers are locked on Generic (Windows), or OpenGL 1.1 to be certain.
The issue was solved the minute I've tracked down the driver problem (Vista) and installed more recent drivers.
Sorry, and thx for understanding.