I've got a situation where a custom address form has a client script / custom button attached. When that script is bundled and installed in another environment, the button appears on the form, the function is not found and I'm getting a 403 Unauthorized trying to download the script. Neither the folder nor the file are locked and I'm in the Administrator role. Any idea what could be causing this?

what does the file record for the script file look like?

Hide in SuiteBundle is checked. Could that be the issue? Even though I can see the file in the bundle folder in the file cabinet?

Probably. It hides the contents of the file. Which you cant do with client script

OK, thanks!