Updating content types

So according to a post in the forum, by uploading an existing pattern with changes should automatically update if the content already exists. I've created a content type with a pattern, if I change one of the attributes like
1 to
0, i would think it would just update the settings accordingly for the content type however when running the updated pattern, I get an error:

Action #1: CCK: Create or Edit Content Type (op "execute")
PHP error occured:
warning: array_key_exists() [function.array-key-exists]: The first argument should be either a string or an integer in /home/mydirectory/public_html/mysite/sites/all/modules/patterns/patterns.module on line 2397.

The pattern itself looks like this (I've excluded the obvious info and xml declaration just to keep this short and sweet):

  <actions>
	<content>
		<name>Sample Tip</name>
		<type>sample_tips</type>
		<description></description>
		<status>1</status>
                <promote>0</promote>
		<title_label>Title</title_label>
		<body_label>Body</body_label>
		<comment>0</comment>
	</content>
  </actions>

So... can you not update an existing content type once its already been created? Is there a trick to this? I'm confused.
Thanks.