I've got Garritan PO5 and linking it to my Encore via midiYoke.  It's been working just fine, but a few weeks ago the midi yoke disappeared from the Preferences in GPO5 and also from my midi set up in Encore.  I re-downloaded midi yoke and it was fine again for a few weeks, but now it's gone and done the same thing again.  Can anyone offer a suggestion/help.  Thanks John