Hi Paul,
If you are still having an issue accessing these files I would suggest putting in a case with the tech support team and letting them know that the apps you are downloading from the exchange are having this issue. I see the same error when I download the app and our team might be able to help track down where the files are for you or why the error is coming up more quickly. You can create a case with our tech support team here in community by clicking on Support in the global navigation bar or you can also contact them in Quickbase when you are signed in under the question mark (?) icon that appears in the navigation there by selecting "Manage Support Cases".
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Evan Martinez
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