Document file name file size

I believe there is a bug on scriptcase …
I have a Document file name field, when I try to select file of 1.3GB the system come with error

PHP Warning: Undefined array key “param_seq” in /var/www/html/scriptcase/app/cmges/import_sdi_omega/import_sdi_omega_ul_save.php on line 64

If file is less size it works
Anyone can help?

ps: I checked php.ini file and I have no problem on that