Just installed the caption plugin.
The buttons appear correctly on the toolbars when configuring the layouts of the profiles,
but appear as blank buttons (that function perfectly) when actually in the editor.
It does not matter whether I use the default or classic templates! Either way, I can see the icons on the buttons when configuring but not when editing.

What to do?

Thanks for your attention.
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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