Pasting externally no longer working in Photoshop CS6- solved

It has been working for years, and now suddnely isn't.

When I make a selection, ctrl C I can paste it into another layer, or a new document in photoshop itself.

But if I try and paste that selection into anything else it no longer works. 

I used to copy image A and paste it into, say, Google, for instance, but now instead of my selection it'll paste the last thing in my clipboard. 

-resetting preferences fixed the issue 

I've tried restarting photshop and my pc, but is still happening. 

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