Error loading wsdl - InvalidDefinitionException

Hi,

I have Windows 7 and a new soapUI 4.5.2 version, 32 bit.

I try to load a wsdl and get the following error:

Error loading [http://wsf.cdyne.com/WeatherWS/Weather.asmx?WSDL]: java.lang.Exception: Failed to load url; http://wsf.cdyne.com/WeatherWS/Weather.asmx?WSDL, 0

In the error log is displayed:
Wed Aug 21 09:02:41 CEST 2013:ERROR:Network Error for Version Update or Proxy
Wed Aug 21 09:02:41 CEST 2013:ERROR:java.net.ConnectException: Connection timed out: connect
java.net.ConnectException: Connection timed out: connect
...
Wed Aug 21 09:06:58 CEST 2013:ERROR:com.eviware.soapui.impl.support.definition.support.InvalidDefinitionException
com.eviware.soapui.impl.support.definition.support.InvalidDefinitionException
at com.eviware.soapui.impl.wsdl.support.wsdl.WsdlLoader.loadXmlObject(WsdlLoader.java:138)
...

The wsdl can be displayed in a browser without problems.

What can I do to solve the problem?

Best regards,
Birgit