Fixed issue with format of Scaling factor file format. Before, becaus…

…e the programs was trying to find any matched entries, if the format was wrong, the new entries were not recorded.... Now, if the format is wrong, the containt of the file is simply replaced by the new entries. This refs #5071

Code/Mantid/Framework/PythonAPI/PythonAlgorithms/sfCalculator.py

@@ -481,9 +481,37 @@ def outputFittingParameters(a, b, error_a, error_b,
                 if _match == False:
                     entry_list_to_add.append(i)
 
-        except:
+        except:            
+            #replace file because this one has the wrong format
+            _content = ['#y=a+bx\n', '#\n',
+                        '#lambdaRequested[Angstroms] S1H[mm] S2H[mm] S1W[mm] S2W[mm] a b error_a error_b\n', '#\n']
+            sz = len(a)
+            for i in range(sz):
+
+                _line = 'IncidentMedium=' + incident_medium.strip() + ' '
+                _line += 'LambdaRequested=' + str(lambda_requested) + ' '
 
-            pass
+                _S1H = "{0:.8f}".format(abs(S1H[i]))
+                _S2H = "{0:.8f}".format(abs(S2H[i]))
+                _S1W = "{0:.8f}".format(abs(S1W[i]))
+                _S2W = "{0:.8f}".format(abs(S2W[i]))
+                _a = "{0:.8f}".format(a[i])
+                _b = "{0:.8f}".format(b[i])
+                _error_a = "{0:.8f}".format(float(error_a[i]))
+                _error_b = "{0:.8f}".format(float(error_b[i]))
+
+                _line += 'S1H=' + _S1H + ' ' + 'S2H=' + _S2H + ' '
+                _line += 'S1W=' + _S1W + ' ' + 'S2W=' + _S2W + ' '
+                _line += 'a=' + _a + ' '
+                _line += 'b=' + _b + ' '
+                _line += 'error_a=' + _error_a + ' '
+                _line += 'error_b=' + _error_b + '\n'
+                _content.append(_line)
+
+            f = open(output_file_name, 'w')
+            f.writelines(_content)
+            f.close()
+            return
 
         _content = []
         for j in entry_list_to_add: