It was only for luck!
I've installed a new MOD (cracker tracker), so I've modified some file.
After, FAP worked with others browser (i've tried Firefox and Opera).
After I've uninstalled cracker tracker and FAP worked only with IE.
So I've tried ALL cracker tracker modified files and a tpl file (overall_header.tpl) had not all string correct (there wasn't </table></td>
Maybe installing FAP 1.4.1. editing program delete the strings.
To a correct editing tpl files, there is a good free software (hapedit), that I council to all.