Removed rxPair from the source, which was causing a bug.

SimPEG/MT/SrcMT.py

@@ -1,11 +1,10 @@
-from SimPEG import Survey, Utils, Problem, Maps, np, sp, mkvc
+from SimPEG import Utils, Problem, Maps, np, sp, mkvc
 from SimPEG.EM.FDEM.SrcFDEM import BaseSrc as FDEMBaseSrc
 from SimPEG.EM.Utils import omega
 from scipy.constants import mu_0
 from numpy.lib import recfunctions as recFunc
 from Sources import homo1DModelSource
 from Utils import rec2ndarr
-from SurveyMT import Rx
 import sys
 
 #################
@@ -22,7 +21,6 @@ class BaseMTSrc(FDEMBaseSrc):
     '''
 
     freq = None #: Frequency (float)
-    rxPair = Rx
 
 
     def __init__(self, rxList, freq):

SimPEG/MT/SurveyMT.py

@@ -230,6 +230,9 @@ class Rx(SimPEGsurvey.BaseRx):
 
                 # Calculate the complex derivative
                 PDeriv_complex = Hd * (ZijN_uV - Zij * Hd_uV )
+            elif self.projTyep is 'T3D':
+                raise NotImplementedError('Has not been implement for 3D tipper tensor')
+
             # Extract the real number for the real/imag components.
             Pv = np.array(getattr(PDeriv_complex, real_or_imag))
         elif adjoint: