[Haskell-cafe] enumerators: exception that can't be catched

Hello, I'm debugging an issue in "websockets" package, https://github.com/jaspervdj/websockets/issues/42 I'm not familiar with "enumerator" package (websockets are based on it), so I'm looking for help. The exception is throws inside "enumSocket" enumerator using "throwError" ( http://hackage.haskell.org/packages/archive/network-enumerator/0.1.5/doc/htm... ), but I can't catch it with "catchError". It is propagated to "run" function: <interactive>: recv: resource vanished (Connection reset by peer) The question is: how is it possible? could it be a bug in "enumerator" package? Thanks, Yuras