By default, Zen Cart is setup with this as true:
and this as false:Download by Redirect
Use browser redirection for download. Disable on non-Unix systems.
Note: Set /pub to 777 when redirect is true
Have you tested an order with a download to see if there are any issues?Download by streaming
If download-by-redirect is disabled, and your PHP memory_limit setting is under 8 MB, you might need to enable this setting so that files are streamed in smaller segments to the browser.
Has no effect if Download By Redirect is enabled.
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