[chuck-users] MIDI tutorial problem

BODY { font-family:Arial, Helvetica, sans-serif;font-size:12px; }greetings! a chuck novice here, so likely some silly user error!.... ;-) working through the tutorials in the pdf manual, when following the Getting MIDI section, if i do this... MidiIn min; if( !min.open(1) ) { me.exit(); } while(true){ min => now; while( min.recv(msg) ){ ; } } ...chuck throws me an "undefined variable 'msg'..." error! something i'm missing? recent change in MIDI syntax? (i'm on chuck v1.2.1.3 on linux) "chuck --probe" does show my desired MIDI interface as "1". thanks in advance... cheers! .pltk.