contentDirectory.PropertyContainerUpdateIDs() crashes

[ChriD]

Hi,

I can search and browse via the contentDirectory Object, but if i call
contentDirectory.PropertyContainerUpdateIDs() the system crashes with an Error "Abort() called".

Code:

contentDirectory = new OpenHome.Net.ControlPoint.Proxies.CpProxyUpnpOrgContentDirectory1(_device);
contentDirectory.SetPropertyContainerUpdateIDsChanged(ContainerUpdateIDsSink);
contentDirectory.Subscribe();

protected void ContainerUpdateIDsSink()
{
String updateIds = contentDirectory.PropertyContainerUpdateIDs(); // <-- System crashes
}

I'm using VisualStudio2010 Express C#
OhNet libs (1.0.544) at 24.01.2013

Am i doeing something wrong?