I solved the problem. I uploaded a file that did not include protection for login. Applied protection and is apparently resolved.
Now a warning appears every time I try to update a data file. The message is the standard that I can not change the Header. But the strange thing is that this file was created by DataAssist the same way as others and this only gives the message. I can upgrade but it does not direct to Result Page. If I give a refresh on the page appears the changes.
Follows the line that appears with the warning and also a JPG with the line that references the 108 error.
Warning: Cannot modify header information - headers already sent by (output started at /home/portalcpos/webapps/ROOT/admin/inscr_eventos_Update.php:5) in /home/portalcpos/webapps/ROOT/admin/inscr_eventos_Update.php on line 108