[parser] Update invalid odML format version text

Author: mpsonntag

odml/tools/odmlparser.py

@@ -190,8 +190,8 @@ def to_odml(self):
         if 'odml-version' not in self.parsed_doc:
             raise ParserException("Invalid odML document: Could not find odml-version.")
         elif self.parsed_doc.get('odml-version') != FORMAT_VERSION:
-            msg = ("Invalid odML document format version '%s'. "
-                   "Supported versions: '%s'."
+            msg = ("Cannot read file: invalid odML document format version '%s'. \n"
+                   "This package supports odML format versions: '%s'."
                    % (self.parsed_doc.get('odml-version'), FORMAT_VERSION))
             raise ParserException(msg)
 

odml/tools/xmlparser.py

@@ -164,8 +164,8 @@ def _handle_version(root):
             raise ParserException("Could not find format version attribute "
                                   "in odML start tag.\n")
         elif root.attrib['version'] != FORMAT_VERSION:
-            msg = ("Invalid odML document format version '%s'. "
-                   "Supported versions: '%s'."
+            msg = ("Cannot read file: invalid odML document format version '%s'. \n"
+                   "This package supports odML format versions: '%s'."
                    % (root.attrib['version'], FORMAT_VERSION))
             raise ParserException(msg)