We have a set of web services which intermitently fail with the error:
System.Web.Services.Protocols.SoapException: EndInvoke can only be called once for each asynchronous operation
Our own code does not use asychronous calls but does make use of WSE and we suspect that something in the WSE stack is failing. In addition we are unable to reproduce the problem in our development environment, the problem only occurs in our beta test environment and even in this environment the problem is very erratic - sometime a request works but the making the same request a few seconds later causes the problem,
Any thoughts/ideas on what we can do to investigate or fix the problem would be much appreciated.
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