modules/xoopsinfo/language/english/mimetypes.txt
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You don't have copy the file class/uploader.php being in the zip file!!!
<br><br>
<ul>
<li>Uninstall the module XoopsInfo</li>
<li>Copy all the files being in the zip file on your website</li>
<li>Install the module XoopsInfo</li>
</div>