So I found the issue seems to be a caching issue. I navigated by windows explorer and saw other .aspx page in the folder. Tried loading each one, and finally one came up with an error...
Error restoring the object . Original exception: Error during temporary files deletion. Please delete the folder D:\espn-cms2\CMS\App_Data\CMSTemp\ImportExport\ manually.
After deleting this directory, the "Import Site" and "Export" pages now load.