Bas, I checked my cabal file and I was already using 1.3.0.0. Mike On Jan 21, 2015, at 12:52 PM, Bas van Dijk <v.dijk.bas at gmail.com> wrote: > Hi Michael, > > Are you already using usb-1.3.0.0? If not, could you upgrade and test > again? That release fixed the deadlock that Ben and Carter where > talking about. > > Good luck, > > Bas