FEM: ccx tools, check if the active analysis has result object before try to open results

src/Mod/Fem/FemToolsCcx.py

@@ -242,6 +242,9 @@ class FemToolsCcx(FemTools.FemTools):
             for m in self.analysis.Member:
                 if m.isDerivedFrom("Fem::FemResultObject"):
                     self.results_present = True
+                    break
+            else:
+                FreeCAD.Console.PrintError('FEM: No result object in active Analysis.\n')
         else:
             raise Exception('FEM: No results found at {}!'.format(frd_result_file))
 
@@ -256,7 +259,7 @@ class FemToolsCcx(FemTools.FemTools):
         else:
             raise Exception('FEM: No .dat results found at {}!'.format(dat_result_file))
         if mode_frequencies:
-            print(mode_frequencies)
+            # print(mode_frequencies)
             for m in self.analysis.Member:
                 if m.isDerivedFrom("Fem::FemResultObject") and m.Eigenmode > 0:
                     for mf in mode_frequencies: