[Getdp] simple 3d electrostatic problem

[Michal Hajek]

Hello, 

I am working on a quite simple electrostatic example. Unfortunately, I
must be doing some stupid mistake, since in calculation I still get 

"Warning   : Generated system is of dimension zero"

and later on:

"Warning   : No equations in linear system"

My .geo, .pro and .msh definitions can be found at: 
http://material.karlov.mff.cuni.cz/people/hajek/getdp/

I have spent last few days trying to localise my mistake. Finally, I
decided to ask honestly the list. 
Can anyone please help me? 

My intention is to put this problem into wiki after I have it successfully
solved. :)

Thanks a lot in advance. 

Best regards
Michal