Upload of 54MB attachment error

[evogoat]

I am trying to upload a 54MB attachment to a post on my forum. All settings support a file size this large and my php.ini settings are set to 64MB for all relevant settings. The file uploads but then shows an exclamation mark and just says upload error. It gives no reason why it failed. Can anyone think why I am unable to upload the attachment?

[Lynne]

Can you upload other attachments at all?

These server settings may also effect your attachment upload limits:

PHP Settings:
max_execution_time
memory_limit
post_max_size
upload_max_filesize
max_input_time

MySQL Settings:
max_allowed_packet
wait_timeout

[evogoat]

Thanks for the reply, I have put in some figures.

Can you upload other attachments at all?

Yes.

These server settings may also effect your attachment upload limits:

PHP Settings:
max_execution_time - 30 - and the upload takes about 15 - 20 mins max
memory_limit - 64M
post_max_size - 250
upload_max_filesize - 64M
max_input_time - 60


MySQL Settings:
max_allowed_packet - ?
wait_timeout - ?

mysql.connect_timeout - 60

Thanks :)