We don't handle Geoserver error messages.

[tcoulter]

This isn't permission status codes; this is actual error messages. Like, when Geoserver tells you a save has FAILED, or when we get an exception report. We should handle these gracefully.

[tcoulter]

There's some stuff in OL's SaveFeature? control that might help:

var response = request.responseText;

if (response.indexOf('SUCCESS') != -1

response.indexOf('TransactionSummary?')) { this.onSuccess(response);

} else if (response.indexOf('FAILED') != -1

response.indexOf('Exception') != -1) { this.onFailure(response);

}