I received an ES error (via email) of an



There must be some field that I haven't configured correctly...any ideas?

Well, that message is kind of like asking how long is a string. Are you getting this on every query? Are the assemblies on the client and server lined up (same versions)? There is a lot that could be behind this message.



If this happened once, then most likely it was a connection issue. If it happens on all queries then you have an issue.

This only occurred once, so I guess likely it was a connection error.