[MERGE][Trivial] Update automatic plugin management errors

[Ian Clatworthy]

Ian Clatworthy has voted approve.
Status is now: Semi-approved


For details, see: 
http://bundlebuggy.aaronbentley.com/request/%3C2422be180805260006l339ece00wbc189ca807f6f1b9%40mail.gmail.com%3E