error when exporting to csv

Can someone help? Im getting the following error when trying to export to csv file, Can anyone help?

Server error
The website encountered an error while retrieving britishfoodabroad.co.uk/administrator/in...ikashop&ctrl=product . It may be down for maintenance or configured incorrectly.

Here are some suggestions:
Reload this webpage later.
HTTP Error 500 (Internal Server Error): An unexpected condition was encountered while the server was attempting to fulfill the request.

Hi,

You'll maybe find your answer there :

It's indeed probably happening because the resource limitation is too strict on your website for the file you're importing.
In that case, you can split the file in several smaller CSV files.
Or increase the memory_limit max_execution_timeout options of your PHP.

It could also be that the CSV file you're using is not valid.

hello where would you change the memory_limit max_execution_timeout options of your PHP?

ok i worked it out, you need to select the product items then click export! would be better if the error message actually told you that rather than give you a server error message!