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After a migration/upgrade to a newer version of the CCC application installed as part of the Media Manager, it can happen that CCC functionality is not working correctlycan malfunction. For example, the insert button is missing, and even after you save the active document, you are still told to save the active document before you can upload or access the Link Manager.
This happens due to because Adobe caching caches the CCC plugin code, which refers partly to the new UI, while the application cannot communicate with the underlying CEP engine used to interact with Adobe APIs.
To fix this error, first close the Adobe product.
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Windows - C:\Users\<USERNAME>\AppData\Local\Temp\cep_cache
On MacOS, it can be placed in two locations depending on the version:
MacOS (1) - /Users/<USERNAME>/Library/Caches/CSXS/cep_cache
MacOS (2) - /Users/<USERNAME>/Library/Application Support/Adobe/CEP/extensions/CSXS
Then, simply delete all the folders related to the Adobe application that if the issue occurs.
This will run the CCC plugin in a clean state
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