[TYPO3] NuSOAP error (Cannot redeclare class soapclient)

[Lukas]

I have installed the nuSoap extension because the Solunas extension 
depend on it. But I get this error message when I try to view any page:

Fatal error: Cannot redeclare class soapclient in 
/Library/Servers/Server-1/Documents/roombooking/typo3conf/ext/nf_nusoap/nusoap/nusoap.php 
on line 3837

Is there any newer version of nuSoap out there, I can only find 0.0.1 on 
  http://typo3.org/extensions/repository/

My Typo3 version is 4.04