mp4 upload error

[b3n.ji]

Hi there,

I have a project where the customer wants to upload some mp4 video files and is getting a strange error message.

I've already uploaded a php.ini file to make sure the upload restrictions set by the hoster will be overwritten to make sure uploading large files will not cause any error.

Code:

memory_limit = 128M
post_max_size = 64M
upload_max_filesize = 48M

Uploading a 300kb sample mp4 file is working fine, but the customer 12mb file is getting the following error:

Code:

Uploadify

Notice: Undefined index: sessionHash in xxx on line 23
Die Datei konnte nicht hochgeladen werden - Authentifizierung gescheitert
(en: File could not be uploaded - authentication failed)

Unfortunately I'm not able to get any apache error logs as of now, I have no hoster details / login details / contact.

Maybe I'm just stupid or blind, but I have no clue where this error is coming from.

I appreciate any help

Thanks in advance!
Ben