upgraded emule from 0.49c to 0.50a

because I am using the binary zip version
the path to emule.exe is now C:\eMule0.50a\
I need to change the handling of ed2k:// manually

in
HKEY_CLASSES_ROOT\ed2k\shell\open\command
REG_SZ
"C:\eMule0.50a\emule.exe" "%1"