The main pack that I'm trying to upload seems to be the cause of the error and I'm not sure why. When I did the temp folder, the other addons uploaded just fine. Is their a limit on the sizes of addons now? The reason I'm asking is because I've never had a problem with uploading these addons before.

BisWizard, I have been getting the same error since the 1.60 update.
Start of uploading an addon: https://gyazo.com/9d2f8f89ea6e26b24918e9eadf2730ca
As soon as it tries to publish the content: https://gyazo.com/787a83b9dd3f0394ae44f0845557e9c2