I assume you’re deleting via FTP/SSH rather than WordPress itself?
The good news here is that it seems to just be the WordPress files that you’ve deleted, so your posts etc should all be safe in the database.
I’d recommend taking a backup of the database now, to be safe, you can usually do this via phpMyAdmin or your hosts control panel.
Then contact them and see if they have an older version of your files. The original error usually refers to white-space in the code (i.e. extra spaces where there shouldn’t be any)
How much access do you have to your server? It could be that outgoing http requests are blocked at the firewall (port 80)
Hi,
If you add the following line to your wp-config.php file it will display any errors instead of giving you a blank screen:
define(‘WP_DEBUG’, true);
Phil