I swear this will be the last time I call about Guitar Effects on my DP24!! Right!! I have been enjoying and am being quite productive on my DP24 but I keep getting the old "Turn off the Guitar Effect or use two or less dynamic effects" message when I want to use the Guitar Effect and have gotten quite frustrated. So is the solution that when I use the Guitar Effect on one channel, if I only use say Reverb on only one or two channels it will work? Help please.. I think the message actually says to turn off other effects. Sorry not at home to check.