So, I'm using nintex worfklow to call list.asmx, using the GetListContentTypes method. I'm getting a valid xml result, but I've found that if I use the Query XML action to try to get the data out, all I get is a blank result. Even when I use the xpath builder.
After much experimentation, when I remove the xmlns="http://schemas.microsoft.com/sharepoint/soap/" attribute from the xml that gets returned, my query works. If it still has the attribute (which SharePoint is going to send by default), it gives blank output for the same query.
Is this a bug?