I've discovered that I have duplicates of
JCE Editor Updates
JCE MediaBox Updates

Here is a screen shot


Also, I can update via the JCE control panel but no JCE updates show in Joomla core Extension Manager: Update.

Should I do something about those duplicates (how), please?
It seems that module parameters haven't been configured properly. Please make sure that you are using a valid twitter username, and that you have inserted the correct keys. Detailed instructions are written in the module settings page.
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