Hello,
First of all: I am "un"fortunately not a SharePoint developer or administrator. I'm a .NET developer who consumes SharePoint web services to provide some functionality to our core product. My point is, I obviously don't know what I'm doing and I'm sorry about that.
On Monday, apparently without any instigation, one of the operations I use in my code ("CreateSite," from _vti_adm/Admin.asmx which creates a SiteCollection) started to throw the following ProtocolException:
The content type text/html; charset=utf-8 of the response message does not match the content type of the binding (text/xml; charset=utf-8). If using a custom encoder, be sure that the IsContentTypeSupported method is implemented properly. The first 1024 bytes of the response were: '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns:o="urn:schemas-microsoft-com:office:office" lang="en-us" dir="ltr"><head><meta name="GENERATOR" content="Microsoft SharePoint" /><meta name="progid" content="SharePoint.WebPartPage.Document" /><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><meta http-equiv="Expires" content="0" /><meta name="ROBOTS" content="NOHTMLINDEX" /><title>
Error</title><link rel="stylesheet" type="text/css" href="/_layouts/1033/styles/Themable/corev4.css?rev=iIikGkMuXBs8CWzKDAyjsQ%3D%3D"/><script type="text/javascript">
// <