Capture possible error occuring due to to incomplete dictonaries.

pylot/core/io/phases.py

@@ -886,7 +886,6 @@ def writephases(arrivals, fformat, filename, parameter=None, eventinfo=None):
         try:
             eventsource = eventinfo.origins[0]
         except:
-            print("No source origin given! Locate event first!")
             print("No source origin calculated yet, thus no cnv-file creation possible!")
             return
         eventsource = eventinfo.origins[0]

pylot/core/pick/compare.py

@@ -117,14 +117,17 @@ class Comparison(object):
 
         pdf_a = self.get('auto').generate_pdf_data(type)
         pdf_b = self.get('manu').generate_pdf_data(type)
-
+        
         for station, phases in pdf_a.items():
             if station in pdf_b.keys():
                 compare_pdf = dict()
                 for phase in phases:
                     if phase in pdf_b[station].keys():
-                        compare_pdf[phase] = phases[phase] - pdf_b[station][
-                            phase]
+                        try:
+                            compare_pdf[phase] = phases[phase] - pdf_b[station][
+                                phase]
+                        except:
+                            compare_pdf = None
                 if compare_pdf is not None:
                     compare_pdfs[station] = compare_pdf