The software that is offered at that site is not the "Mac Error Code 8076" fixer that it appears to be.
It gives a link to the FreshMac utility, which is an unknown bit of code, I think.
First clue, I think, is the pretty obvious fake replies on that web page.
Also, note the interesting "disclaimer" near the middle of that page
Disclaimer: FixError.com is an authorized distributor of MacBooster. Support can also be provided by the manufacturer. Full repairs start at $39.97.
That MAY be what will "Fix" your system - or maybe it will just "Fix" your system by dropping in some unknown malware.
(Or, fixing will simply cost you at least $40
Just my opinion - stay far away from this ****.
Thanks everyone, but yeah this is what I did in the end as it wasn't playing ball. Finder is really screwing up for me atm. I can't 'export as PDF' from safari into finder currently, as well! Safari just either 1) doesn't save it or, 2) gives me the beach ball and I have to force quit!!