Protect some exceptions from being passed to Swig.

libgnucash/app-utils/gnc-optiondb.cpp

@@ -888,10 +888,17 @@ gnc_register_number_range_option(GncOptionDB* db, const char* section,
                                  const char* doc_string, ValueType value,
                                  ValueType min, ValueType max, ValueType step)
 {
-    GncOption option{GncOptionRangeValue<ValueType>{section, name, key,
-                                                    doc_string, value, min,
-                                                    max, step}};
-    db->register_option(section, std::move(option));
+    try
+    {
+        GncOption option{GncOptionRangeValue<ValueType>{section, name, key,
+                                                        doc_string, value, min,
+                                                        max, step}};
+        db->register_option(section, std::move(option));
+    }
+    catch(const std::invalid_argument& err)
+    {
+        std::cerr <<"Number Range Option " << err.what() << ", option not registerd.\n";
+    }
 }
 
 void

libgnucash/app-utils/gnc-optiondb.i

@@ -425,10 +425,19 @@ wrap_unique_ptr(GncOptionDBPtr, GncOptionDB);
         auto db_opt = optiondb->find_option(section, name);
         if (!db_opt)
         {
-//          PWARN("Attempt to write non-existent option %s/%s", section, name);
+            std::cerr <<"Attempt to write non-existent option " << section
+                << "/" << name;
             return;
         }
-        GncOption_set_value_from_scm(db_opt, new_value);
+        try
+        {
+            GncOption_set_value_from_scm(db_opt, new_value);
+        }
+        catch(const std::invalid_argument& err)
+        {
+            std::cerr << "Failed to set option " << section << "/" << name
+                      << ": " << err.what() << "\n";
+        }
     }
 
     GncOptionDBPtr