When trying to upload any file size, this is the error message.
The following error occurred
slider.png - The uploaded file is too large for the server to process.
That file is 33kb. PHP upload limit is set at 8M. MySQL is 64M for the max..
We have moved from Apache2 to Nginx on the new VPS
xenForo upload limit is still set at 5Mb (did a straight copy/paste from the previous VPS.