I can't reserve my nickname

[bossik]

When i want to reserve my name, i get this error:
Warning: include(XXX): failed to open stream: No such file or directory in XXX

Warning: include(): Failed opening 'XXX' for inclusion (include_path='XXX') in XXX

Fatal error: Call to undefined function geoip_open() in XXX

What is it? I have only 2 reserved names (3 free slots left)

a powiem ci ze nie tylko ty masz ten problem , zaraz cos z tym pomysle

EDIT: sproboj ponownie dodac