Hi,
Since upgrading 5.4.2.2 to 5.5.1 I have been unable to connect to the Marketplace. I've seen others with a similar problem but not seen a solution yet. The error message I get when trying to update an add-on is:

Fatal error: Class 'MarketplaceRemoteItem' not found in /var/www/vhosts/artisans.co.uk/httpdocs/updates/concrete5.5.1/concrete/single_pages/dashboard/extend/update.php on line 43

I think it may be something to do with what's in the updates folders on the server side.

I've attached a screen grab of the updates folder which shows what's there, namely each version of C5 current and previous. Please can you let me know if this is configured correctly?

Many thanks!