diff --git a/plug-ins/adjustable-fade.ny b/plug-ins/adjustable-fade.ny
index fc9d99295..0683208b0 100644
--- a/plug-ins/adjustable-fade.ny
+++ b/plug-ins/adjustable-fade.ny
@@ -6,6 +6,7 @@
 ;categories "http://lv2plug.in/ns/lv2core#MixerPlugin"
 ;name "Adjustable Fade..."
 ;manpage "Adjustable_Fade"
+;debug false
 ;action "Applying Fade..."
 ;author "Steve Daulton"
 ;copyright "Released under terms of the GNU General Public License version 2"
diff --git a/plug-ins/crossfadetracks.ny b/plug-ins/crossfadetracks.ny
index 4e7e33630..310e27501 100644
--- a/plug-ins/crossfadetracks.ny
+++ b/plug-ins/crossfadetracks.ny
@@ -3,6 +3,7 @@
 ;type process
 ;name "Crossfade Tracks..."
 ;manpage "Crossfade_Tracks"
+;debug disabled
 ;action "Crossfading..."
 ;preview selection
 ;author "Steve Daulton"
@@ -70,4 +71,6 @@ audio clip, fade in, otherwise fade out."
       (setf out-dist (min out-dist (abs (- end (second (nth i clips)))))))
     (if (< in-dist out-dist) 'in 'out)))
 
-(crossfade type direction curve)
+(if (< (length (get '*selection* 'tracks)) 2)
+    "Error.\nSelect 2 (or more) tracks to crossfade."
+    (crossfade type direction curve))
diff --git a/plug-ins/highpass.ny b/plug-ins/highpass.ny
index c613f9489..6400d1ab5 100644
--- a/plug-ins/highpass.ny
+++ b/plug-ins/highpass.ny
@@ -4,6 +4,7 @@
 ;preview linear
 ;name "High Pass Filter..."
 ;manpage "High_Pass_Filter"
+;debug disabled
 ;action "Performing High Pass Filter..."
 ;author "Dominic Mazzoni"
 ;copyright "Released under terms of the GNU General Public License version 2"
diff --git a/plug-ins/limiter.ny b/plug-ins/limiter.ny
index 6d74ac5d6..58ab11c81 100644
--- a/plug-ins/limiter.ny
+++ b/plug-ins/limiter.ny
@@ -4,6 +4,7 @@
 ;categories "http://lv2plug.in/ns/lv2core/#DynamicsPlugin"
 ;name "Limiter..."
 ;manpage "Limiter"
+;debug false
 ;action "Limiting..."
 ;preview enabled
 ;author "Steve Daulton"
diff --git a/plug-ins/lowpass.ny b/plug-ins/lowpass.ny
index 9ad9431c4..c04564e5f 100644
--- a/plug-ins/lowpass.ny
+++ b/plug-ins/lowpass.ny
@@ -4,6 +4,7 @@
 ;preview linear
 ;name "Low Pass Filter..."
 ;manpage "Low_Pass_Filter"
+;debug disabled
 ;action "Performing Low Pass Filter..."
 ;author "Dominic Mazzoni"
 ;copyright "Released under terms of the GNU General Public License version 2"
diff --git a/plug-ins/notch.ny b/plug-ins/notch.ny
index d740504d5..de9fbff2a 100644
--- a/plug-ins/notch.ny
+++ b/plug-ins/notch.ny
@@ -4,6 +4,7 @@
 ;preview linear
 ;name "Notch Filter..."
 ;manpage "Notch_Filter"
+;debug false
 ;action "Applying Notch Filter..."
 ;author "Steve Daulton and Bill Wharrie"
 ;copyright "Released under terms of the GNU General Public License version 2"
diff --git a/plug-ins/tremolo.ny b/plug-ins/tremolo.ny
index f656952d2..95e0022d4 100644
--- a/plug-ins/tremolo.ny
+++ b/plug-ins/tremolo.ny
@@ -5,6 +5,7 @@
 ;categories "http://lv2plug.in/ns/lv2core#ModulatorPlugin"
 ;name "Tremolo..."
 ;manpage "Tremolo"
+;debug disabled
 ;action "Applying Tremolo..."
 ;author "Steve Daulton"
 ;copyright "Released under terms of the GNU General Public License version 2"
@@ -19,11 +20,8 @@
 
 ;control wave "Waveform type" choice "sine,triangle,sawtooth,inverse sawtooth,square" 0
 ;control phase "Starting phase (degrees)" int "" 0 -180 180
-;control wet "Wet level (percent)" int "" 40 0 100
-;control lfo "Frequency (Hz)" real "" 4 0 10
-
-; Limit to sensible range
-(setq lfo (min 1000 (max lfo (/ (get-duration 1)))))
+;control wet "Wet level (percent)" int "" 40 1 100
+;control lfo "Frequency (Hz)" float-text "" 4 0.001 1000
 
 ; Convert % to linear
 (setq wet (/ wet 200.0))