diff --git a/wetb/hawc2/hawc2_simulation.py b/wetb/hawc2/hawc2_simulation.py
index 36168ae604a7ab5122f12c1d87d62a7c59a37bf8..ab3937eb85ced41803afad968861e39d6c25da99 100644
--- a/wetb/hawc2/hawc2_simulation.py
+++ b/wetb/hawc2/hawc2_simulation.py
@@ -237,6 +237,7 @@ class Hawc2_Simulation(object):
                         is_good = True
             else:
                 file_obj.written_file = file_obj.original_file
+
         # Now write the HTC file
         self.input_files['htc'][0].written_file = os.path.join(self.write_directory, self.source_name)
         fout = open_file_in_dir(self.input_files['htc'][0].written_file, 'wb')
@@ -274,7 +275,7 @@ class Hawc2_Simulation(object):
         else:
             accompanying_file=os.path.abspath(os.path.realpath(accompanying_file))
         if not accompanying_file.startswith(self.source_directory):
-            raise ValueError('The accompanying file must be contained within the directory of the HTC file, or one of the sub-directories')
+            raise ValueError('The accompanying file must be contained within the directory of the HTC file, or one of the sub-directories. file: {} not found'.format(accompanying_file))
         destination=accompanying_file[len(self.source_directory)+1:]
         self.accompanying_files.append(accompanying_file)
         self.accompanying_destinations.append(destination)