Follow the guide on our website.
http://digitalprice.org/ 
About the other problem, run repairwallet on the debug console of your wallet, and then send the coins again.

Regards!
For the second problem, thanks very much, i've got my coins back.

For the first one (raspbian compilation) i followed the guide. Here is the error i get :
cd /home/pi/digiprice/DigitalPrice-2.0.0.1; /bin/sh share/genbuild.sh /home/pi/digiprice/DigitalPrice-2.0.0.1/build/build.h
/bin/sh: 0: Can't open share/genbuild.sh
I've checked, git clone doesn't provide a genbuild.sh file.
[EDIT] Got it : took a genbuild.sh file from another coin. Compilation done. Testing in progress

Nice, mate.