DislikedYes, I'm getting a similar thing, multiple entries in the experts tab saying "market order EURGBP xxxxxxxx cannot be deleted" when that order number is that of an already open AUDUSD trade.Ignored
The problem is that some trade cannot be deleted because of various execution errors. This is why I use (shameless plug) LibOrderReliable4. Like Avis, it tries harder.
Either there were some trade context busy problems (in which case you just keep on pounding on it until it's done) or the order actually opened before the EA tried to delete (in which case the error is appropriate).