Fixed an issue with ReaderError generated by the LibYAML wrapper.
diff --git a/lib/yaml/reader.py b/lib/yaml/reader.py
index 1d4667c..1e7a4db 100644
--- a/lib/yaml/reader.py
+++ b/lib/yaml/reader.py
@@ -74,7 +74,7 @@
         else:
             return "unacceptable character #x%04x: %s\n"    \
                     "  in \"%s\", position %d"    \
-                    % (ord(self.character), self.reason,
+                    % (self.character, self.reason,
                             self.name, self.position)
 
 class Reader(object):
@@ -175,7 +175,7 @@
         if match:
             character = match.group()
             position = self.index+(len(self.buffer)-self.pointer)+match.start()
-            raise ReaderError(self.name, position, character,
+            raise ReaderError(self.name, position, ord(character),
                     'unicode', "special characters are not allowed")
 
     def update(self, length):
diff --git a/tests/data/invalid-utf8-byte.loader-error b/tests/data/invalid-utf8-byte.loader-error
index 15111c3..02b1605 100644
--- a/tests/data/invalid-utf8-byte.loader-error
+++ b/tests/data/invalid-utf8-byte.loader-error
@@ -1,18 +1,18 @@
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 Invalid byte ('\xFF'): ÿ <--
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