diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 649b2fb..dd1b82b 100755
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -1,3 +1,9 @@
+Quisk Version 4.1.56  April 2020
+================================
+For Linux, if the file /usr/include/portaudio.h is absent, portaudio will not be included in Quisk.
+This change makes portaudio optional. The change was needed because portaudio breaks wine. Quisk now
+restores the correct frequency for the 60 meter band. There were some other bug fixes.
+
 Quisk Version 4.1.55  April 2020
 ================================
 The new Sdr Micron radio was missing from the Windows version of Quisk. There are reports that the item
diff --git a/PKG-INFO b/PKG-INFO
index ee92e0f..2eff9dd 100755
--- a/PKG-INFO
+++ b/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 1.1
 Name: quisk
-Version: 4.1.55
+Version: 4.1.56
 Summary: QUISK is a Software Defined Radio (SDR) transceiver that can control various radio hardware.
 Home-page: http://james.ahlstrom.name/quisk/
 Author: James C. Ahlstrom
diff --git a/__init__.py b/__init__.py
index ec2b174..171a590 100755
--- a/__init__.py
+++ b/__init__.py
@@ -1 +1 @@
-#Quisk version 4.1.55
+#Quisk version 4.1.56
diff --git a/configure.py b/configure.py
index 93dca3a..a70cc02 100755
--- a/configure.py
+++ b/configure.py
@@ -191,6 +191,7 @@ class Configuration:
         else:
           print ("Unknown format for", k, fmt)
       except:
+        del radio_dict[k]
         self.settings_changed = True
         errors = errors + "Failed to set %s to %s using format %s\n" % (k, v, fmt)
         #traceback.print_exc()
@@ -286,7 +287,7 @@ class Configuration:
   def GetWidgets(self, app, hardware, conf, frame, gbs, vertBox):	# Called fifth
     if Settings[1] == "ConfigFileRadio":
       return False
-    path = self.GetRadioDict()["widgets_file_name"]
+    path = self.GetRadioDict().get("widgets_file_name", '')
     path = self.NormPath(path)
     if os.path.isfile(path):
       dct = {}
@@ -1143,7 +1144,7 @@ class BaseWindow(wx.ScrolledWindow):
     return ok
   def EvalItem(self, value, fmt4):		# Return Python integer, number, boolean, text
     # return is (item_is_ok, evaluated_item)
-    if fmt4 in ('text', 'rfil'):	# text items are always OK
+    if fmt4 not in ('inte', 'numb', 'bool'):	# only certain formats are evaluated
       return True, value
     jj = value.find('#')
     if jj > 0:
@@ -1159,7 +1160,7 @@ class BaseWindow(wx.ScrolledWindow):
         else:
           v = False
       else:
-        return False, None
+        raise ValueError
     except:
       dlg = wx.MessageDialog(None,
         "Can not set item with format %s to value %s" % (fmt4, value),
diff --git a/docs.html b/docs.html
index 4365627..4fe2e57 100755
--- a/docs.html
+++ b/docs.html
@@ -255,7 +255,7 @@ sudo apt-get install libfftw3-dev
 <br>
 sudo apt-get install libasound2-dev
 <br>
-sudo apt-get install portaudio19-dev
+sudo apt-get install portaudio19-dev	# Optional, if you want portaudio support
 <br>
 sudo apt-get install libpulse-dev
 <br>
@@ -451,7 +451,7 @@ _quisk.so and _quisk.pyd.
 </ul>
 <ul>
 
-<li>sound_portaudio.c is the sound card access code for PortAudio. </li>
+<li>sound_portaudio.c is the sound card access code for PortAudio. PortAudio is optional.</li>
 </ul>
 <ul>
 
@@ -693,15 +693,9 @@ more information.
 <br>
 
 <br>
-The
-PortAudio
-interface is newer, may be easier to get working, and may be used to
-connect Quisk to other programs (I have not tried this). But for
-CW, ALSA
-has
-lower latency. Run "python portaudio.py" in a terminal window to
-see a list of available names, or use
-a different PortAudio tool. Here are some PortAudio names:
+The PortAudio interface is now optional. Many users are changing to PulseAudio.
+You can run "python portaudio.py" in a terminal window to
+see a list of available PortAudio names. Here are some PortAudio names:
 <br>
 <pre>"portaudio:(hw:0,0)"    First sound card.
 "portaudio:(hw:1,0)"    Second sound card, etc.
diff --git a/perseuspkg/quisk_hardware.py b/perseuspkg/quisk_hardware.py
index aaea0b8..c8a15a4 100755
--- a/perseuspkg/quisk_hardware.py
+++ b/perseuspkg/quisk_hardware.py
@@ -161,12 +161,13 @@ class Hardware(BaseHardware):
       print ("perseus hardware: VarDecimSet: index: %s" % (index))
       if index == None:
           print ("perseus hardware: VarDecimSet: current sampling rate: %d" % self.current_rate)
-          new_rate = self.current_rate
+          new_rate = self.current_rate = self.application.vardecim_set
       else:
           new_rate = self.rates[index]
 
       print ("perseus hardware: VarDecimSet: New sampling rate: %d" % new_rate)
       perseus.set_sampling_rate(int(new_rate))
+      self.current_rate = int(new_rate)
 
       return int(new_rate)
 
diff --git a/quisk.egg-info/PKG-INFO b/quisk.egg-info/PKG-INFO
index ee92e0f..2eff9dd 100755
--- a/quisk.egg-info/PKG-INFO
+++ b/quisk.egg-info/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 1.1
 Name: quisk
-Version: 4.1.55
+Version: 4.1.56
 Summary: QUISK is a Software Defined Radio (SDR) transceiver that can control various radio hardware.
 Home-page: http://james.ahlstrom.name/quisk/
 Author: James C. Ahlstrom
diff --git a/quisk.py b/quisk.py
index 48146e9..2eca26b 100755
--- a/quisk.py
+++ b/quisk.py
@@ -3717,7 +3717,7 @@ class App(wx.App):
     self.mode = conf.default_mode
     self.color_list = None
     self.color_index = 0
-    self.vardecim_set = None
+    self.vardecim_set = 48000
     self.w_phase = None
     self.zoom = 1.0
     self.filter_bandwidth = 1000    # filter bandwidth
@@ -3976,7 +3976,7 @@ The new code supports multiple corrections per band.""")
     self.OpenSound()
     tune, vfo = Hardware.ReturnFrequency()	# Request initial frequency
     if tune is None or vfo is None:		# Set last-used frequency
-      self.bandBtnGroup.SetLabel(self.lastBand, do_cmd=True)
+      self.bandBtnGroup.SetLabel(self.lastBand, do_cmd=True, direction=0)
     else:			# Set requested frequency
       self.BandFromFreq(tune)
       self.ChangeDisplayFrequency(tune - vfo, vfo)
diff --git a/quisk_conf_defaults.py b/quisk_conf_defaults.py
index 3298d3e..5952534 100755
--- a/quisk_conf_defaults.py
+++ b/quisk_conf_defaults.py
@@ -1670,7 +1670,7 @@ freedv_tx_msg = ''
 # This is the list of FreeDV modes and their index number.  The starting mode is the first listed.
 freedv_modes = (('Mode 1600', 0), ('Mode 700', 1), ('Mode 700B', 2),
 		# ('Mode 2400A', 3), ('Mode 2400B', 4), ('Mode 800XA', 5),
-		('Mode 700C', 6), ('Mode 700D', 7), ('Future8', 8), ('Future9', 9))
+		('Mode 700C', 6), ('Mode 700D', 7), ('Mode 2020', 8), ('Future9', 9), ('Future10', 10))
 
 # These are the filter bandwidths for each mode.  Quisk has built-in optimized filters
 # for these values, but you can change them if you want.
diff --git a/quisk_widgets.py b/quisk_widgets.py
index 6a8c937..d7fdd6d 100755
--- a/quisk_widgets.py
+++ b/quisk_widgets.py
@@ -1101,7 +1101,7 @@ class RadioButtonGroup:
       button.button.command = self.OnButton
     else:
       button.command = self.OnButton
-  def SetLabel(self, label, do_cmd=False):
+  def SetLabel(self, label, do_cmd=False, direction=None):
     self.button = None
     for b in self.buttons:
       if self.button is not None:
@@ -1116,6 +1116,8 @@ class RadioButtonGroup:
           b.SetIndex(index)
           self.button = b
           b.SetValue(True)
+          if direction is not None:
+            b.direction = direction
       elif b.GetLabel() == label:
         b.SetValue(True)
         self.button = b
diff --git a/setup.py b/setup.py
index acf7e37..2f07662 100755
--- a/setup.py
+++ b/setup.py
@@ -8,7 +8,7 @@ import struct
 # You must define the version here.  A title string including
 # the version will be written to __init__.py and read by quisk.py.
 
-Version = '4.1.55'
+Version = '4.1.56'
 
 fp = open("__init__.py", "w")	# write title string
 fp.write("#Quisk version %s\n" % Version)
@@ -16,6 +16,7 @@ fp.close()
 
 is_64bit = struct.calcsize("P") == 8
 
+have_portaudio = False
 if sys.platform != "win32":
   try:
     import wx
@@ -25,16 +26,26 @@ if sys.platform != "win32":
     print ("Please install the package libfftw3-dev")
   if not os.path.isdir("/usr/include/alsa"):
     print ("Please install the package libasound2-dev")
-  if not os.path.isfile("/usr/include/portaudio.h"):
-    print ("Please install the package portaudio19-dev")
+  if os.path.isfile("/usr/include/portaudio.h"):
+    have_portaudio = True
   if not os.path.isdir("/usr/include/pulse"):
     print ("please install the package libpulse-dev")
 
+libraries = ['asound', 'pulse', 'fftw3', 'm']
+sources = ['quisk.c', 'sound.c', 'sound_alsa.c', 'sound_pulseaudio.c',
+	'is_key_down.c', 'microphone.c', 'utility.c',
+	'filter.c', 'extdemod.c', 'freedv.c']
+define_macros = []
+if have_portaudio:
+	libraries.append('portaudio')
+	sources.append('sound_portaudio.c')
+else:
+	define_macros.append(("QUISK_NO_PORTAUDIO", None))
+
 module1 = Extension ('quisk._quisk',
-	libraries = ['asound', 'portaudio', 'pulse', 'fftw3', 'm'],
-	sources = ['quisk.c', 'sound.c', 'sound_alsa.c', 'sound_portaudio.c', 'sound_pulseaudio.c',
-		'is_key_down.c', 'microphone.c', 'utility.c',
-		'filter.c', 'extdemod.c', 'freedv.c'],
+	libraries = libraries,
+	sources = sources,
+	define_macros = define_macros,
 	)
 
 module2 = Extension ('quisk.sdriqpkg.sdriq',
diff --git a/sound.c b/sound.c
index 0c95baf..2f7fe91 100755
--- a/sound.c
+++ b/sound.c
@@ -433,7 +433,11 @@ int read_sound_interface(
    switch( dev->driver )
    {
       case DEV_DRIVER_PORTAUDIO:
+#ifdef QUISK_NO_PORTAUDIO
+         nSamples = 0;
+#else
          nSamples = quisk_read_portaudio(dev, cSamples);
+#endif
          break;
       case DEV_DRIVER_ALSA:
          nSamples = quisk_read_alsa(dev, cSamples);
@@ -505,7 +509,9 @@ void play_sound_interface(
    switch( dev->driver )
    {
       case DEV_DRIVER_PORTAUDIO:
+#ifndef QUISK_NO_PORTAUDIO
          quisk_play_portaudio(dev, nSamples, cSamples, report_latency, volume);
+#endif
          break;
       case DEV_DRIVER_ALSA:
          quisk_play_alsa(dev, nSamples, cSamples, report_latency, volume);
@@ -860,7 +866,9 @@ void quisk_close_sound(void)	// Called from sound thread
 #ifdef MS_WINDOWS
 	int cleanup = radio_sound_socket != INVALID_SOCKET || radio_sound_mic_socket != INVALID_SOCKET;
 #endif
+#ifndef QUISK_NO_PORTAUDIO
 	quisk_close_sound_portaudio();
+#endif
 	quisk_close_sound_alsa(CaptureDevices, PlaybackDevices);
 	quisk_close_sound_pulseaudio();
 	if (pt_sample_stop)
@@ -1168,7 +1176,9 @@ void quisk_start_sound(void)	// Called from sound thread
 	decide_drivers(PlaybackDevices);
    
 	// Let the drivers see the devices and start them up if appropriate
+#ifndef QUISK_NO_PORTAUDIO
 	quisk_start_sound_portaudio(CaptureDevices, PlaybackDevices);
+#endif
 	quisk_start_sound_pulseaudio(CaptureDevices, PlaybackDevices);
 	quisk_start_sound_alsa(CaptureDevices, PlaybackDevices);