XML Parsing Error: no element found

This error can occur for reasons not more than..
1. The common reason for XML Parsing Error: no element found is missing closing tag for one or two html element, so double check everything to make sure not miss any closing(</td> </tr>) tags in your custom forms.

2. This may also be a misleading error for a custom edit/show form you made and it does not find the list you are trying to fetch minutes from.

E.g. suppose you made a custom form and attached it to a contenttype. This custom form is placed in the layouts folder.
When the form in invoked, the listid and itemid is passed as parameters. If the list is in the subsite and the link to the custom form starts with “/_layouts…” then your form will try to find the list in the root site rather the subsite. So make sure that you specify “_layouts… ” without the slash in the begining so that your form is rendered under the subsite path and it will find your list.

Check it out:SharePoint 2010