diff --git a/conda.recipe/pybert/meta.yaml b/conda.recipe/pybert/meta.yaml
index f648613..800ceff 100644
--- a/conda.recipe/pybert/meta.yaml
+++ b/conda.recipe/pybert/meta.yaml
@@ -1,5 +1,5 @@
 {% set name = "pybert" %}
-{% set version = "2.4.1" %}
+{% set version = "2.4.2" %}
 
 package:
   version: '{{ version }}'
diff --git a/pybert/__init__.py b/pybert/__init__.py
index 7a2c1e7..23fc0bc 100644
--- a/pybert/__init__.py
+++ b/pybert/__init__.py
@@ -56,5 +56,5 @@
 # 
 # __all__ = ['pybert', 'pybert_view', 'pybert_cntrl', 'pybert_util', 'dfe', 'cdr']
 
-__version__ = '2.4.1'
+__version__ = '2.4.2'
 
diff --git a/pybert/pybert.py b/pybert/pybert.py
index 74ab648..d885e86 100755
--- a/pybert/pybert.py
+++ b/pybert/pybert.py
@@ -60,8 +60,6 @@
 
 import pybert
 
-debug = True
-
 gDebugStatus   = False
 gDebugOptimize = False
 gMaxCTLEPeak   = 20.      # max. allowed CTLE peaking (dB) (when optimizing, only)
@@ -347,6 +345,7 @@ class PyBERT(HasTraits):
     sweep_num       = Int(1)
     sweep_aves      = Int(gNumAve)
     do_sweep        = Bool(False)                                           #: Run sweeps? (Default = False)
+    debug           = Bool(True)                                           #: Log extra info to console when true. (Default = False)
 
     # - Channel Control
     use_ch_file     = Bool(False)                                           #: Import channel description from file? (Default = False)
@@ -470,7 +469,7 @@ class PyBERT(HasTraits):
     # About
     ident  = String('PyBERT v{} - a serial communication link design tool, written in Python.\n\n \
     David Banas\n \
-    December 22, 2017\n\n \
+    September 13, 2018\n\n \
     Copyright (c) 2014 David Banas;\n \
     All rights reserved World wide.'.format(pybert.__version__))
 
@@ -524,9 +523,14 @@ class PyBERT(HasTraits):
     def log(self, msg):
         self.console_log += "\n[{}]: {}\n".format(datetime.now(), msg.strip())
 
+    def dbg(self, msg):
+        if(self.debug):
+            print "\n[{}]: {}\n".format(datetime.now(), msg.strip())
+            self.log(msg)
+
     def handle_error(self, err):
         self.log(err.message)
-        if(debug):
+        if(self.debug):
             message(err.message + "\nPlease, check terminal for more information.", 'PyBERT Alert')
             raise
         else:
diff --git a/pybert/pybert_cntrl.py b/pybert/pybert_cntrl.py
index 91da150..6127846 100644
--- a/pybert/pybert_cntrl.py
+++ b/pybert/pybert_cntrl.py
@@ -184,6 +184,7 @@ def my_run_simulation(self, initial_run=False, update_plots=True):
         #       create the duobinary waveform. We only create it explicitly, above,
         #       so that we'll have an ideal reference for comparison.
         chnl_h   = self.calc_chnl_h()
+        self.dbg("Channel impulse response is {} samples long.".format(len(chnl_h)))
         chnl_out = convolve(self.x, chnl_h)[:len(x)]
 
         self.channel_perf = nbits * nspb / (clock() - start_time)
diff --git a/pybert/pybert_util.py b/pybert/pybert_util.py
index 0109838..23d7f9d 100644
--- a/pybert/pybert_util.py
+++ b/pybert/pybert_util.py
@@ -827,14 +827,13 @@ def import_freq(filename, sample_per, padded=False, windowed=False):
     F = rf.Frequency.from_f(f / 1e9)  # skrf.Frequency.from_f() expects its argument to be in units of GHz.
 
     # Form impulse response from frequency response.
-    ntwk = ntwk.interpolate_from_f(F)
-    H = sdd_21(ntwk).s[:,0,0]
+    H = sdd_21(ntwk).interpolate_from_f(F).s[:,0,0]
+    # ntwk = ntwk.interpolate_from_f(F)
     # H = np.concatenate((H, np.conj(np.flipud(H[:-1]))))  # Forming the vector that fft() would've outputted.
     H = np.pad(H, (1,0), 'constant', constant_values=1.0)  # Presume d.c. value = 1.
     if(windowed):
         window = get_window(6.0, 2*len(H))[len(H):]
         H *= window
-
     # h = np.real(np.fft.ifft(H))
     if(padded):
         h = np.fft.irfft(H, int(1. / (fmin * sample_per)) + 1)
diff --git a/pybert/pybert_view.py b/pybert/pybert_view.py
index 2e07d59..3624f63 100644
--- a/pybert/pybert_view.py
+++ b/pybert/pybert_view.py
@@ -221,6 +221,7 @@ def do_load_data(self, info):
                     HGroup(
                         Item(name='thresh',          label='Pj Threshold (sigma)',   tooltip="Threshold for identifying periodic jitter spectral elements. (sigma)", ),
                         Item(name='impulse_length', label='Impulse Response Length (ns)', tooltip="Manual impulse response length override", ),
+                        Item(name='debug', label='Debug', tooltip='Enable to log extra information to console.', ),
                         label='Analysis Parameters', show_border=True,
                     ),
                     label='Simulation Control', show_border=True,