Issue uploading epub to ACS

i trying upload epub file our acs server. can view file using digital editions, when uploading acs following error returned me:

 

<error xmlns="http://ns.adobe.com/adept" data="e_pack_error http://[server here]/packaging/package the%20element%20type%20%22p%22%20must%20be%20terminated%20by%20the%20matching%20end-tag%2 0%22%3c/p%3e%22."/>

 

below request snippet:

 

<package xmlns="http://ns.adobe.com/adept">

                <resourceitem xmlns="http://ns.adobe.com/adept">1</resourceitem>

                <metadata xmlns="http://ns.adobe.com/adept">

                                <dc:description xmlns:dc="http://purl.org/dc/elements/1.1/">applying cognitive linguistics</dc:description>

                                <dc:language xmlns:dc="http://purl.org/dc/elements/1.1/">english</dc:language>

                                <dc:publisher xmlns:dc="http://purl.org/dc/elements/1.1/">routledge, taylor , francis</dc:publisher>

                                <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/">applying cognitive linguistics</dc:title>

                                <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">tyler, andrea</dc:creator>

                </metadata>

                <permissions xmlns="http://ns.adobe.com/adept">

                                <display>

                                                <device />

                                </display>

                                <excerpt>

                                                <device />

                                                <count initial="1" max="1" incrementinterval="86400" />

                                </excerpt>

                                <print>

                                                <device />

                                                <count initial="10" max="10" incrementinterval="86400" />

                                </print>

                </permissions>

                <datapath>c:\ebookimports\31\9781135965525.epub</datapath>

                <thumbnaildata>[encrypted data here - long post]</thumbnaildata>

                <expiration>2012-08-06t14:41:00z</expiration>

                <nonce>obrzlzetltvvnxqsxhbt</nonce>

                <hmac>bmseble6hzvtuaktvf11pxtvsnc=</hmac>

</package>

somewhere in epub file in 1 of html file there <p> element doesn't have matching </p> end tag.  makes non valid epub.

 

for more descriptive error can go run epubcheck on file, should show error is.

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