Now the code of my batch file is:
.\updater\HnH_updater.exe
PATH=%PATH%;"C:\Program Files (x86)\Java\jre6\bin\"
Start javaw.exe -Djava.library.path=.\ -Xms256m -Xmx512m -jar haven.jar moltke.seatribe.se -r ./res
pause
Same behavior it can't access haven.jar.
I tried variations like
-Djava.library.path=.
-Djava.library.path=./
-Djava.library.path="C:\Ender"
-Djava.library.path=".\" yields no more error but it doesn't do anything