[YouTube-API] Malformed request

I am using a ResumableUploader in VB.NET to upload, but when I start the upload, it returns a 400 code with the following:

HTTP/1.1 400 Bad Request

Server: HTTP Upload Server Built on Dec 13 2011 15:55:44 (1323820544)

X-GData-User-Country: US

Content-Type: text/xml; charset=UTF-8

X-GUploader-UploadID: AEnB2UoQLXSm3fWStwi2K1nflid728SLVCMstGQFEXfkFjZVXxyH2wLtp1Y3khBuWcNNDIvI8ydZ7j6j3mXxFHKGsfUHis1QFg

Date: Fri, 30 Dec 2011 03:03:11 GMT

Pragma: no-cache

Expires: Fri, 01 Jan 1990 00:00:00 GMT

Cache-Control: no-cache, no-store, must-revalidate

Content-Length: 257

<?xml version='1.0' encoding='UTF-8'?><errors><error><domain>yt:validation</domain><code>invalid_value</code><location type='xpath'>media:group/media:category[@scheme='http://gdata.youtube.com/schemas/2007/categories.cat']/text()</location></error></errors>

It looks like there is a problem with either the video category. I see no problems with the code I have since it practically came out of the google documentation. For reference, the line that sets the category is as follows:

video.Tags.Add(New MediaCategory(queue.Items.Item(currentitem).subitems(4).text, YouTubeNameTable.CategorySchema))

It reads from the listview subitem, which I currently have 'Gaming' as the category.

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