I have just started getting a white page when trying to access the login.

checking the error log, I see this:

[01-Feb-2015 04:23:59 America/Denver] PHP Fatal error: Call to undefined function bfa_get_options() in /home1/gbwtwofo/public_html/executivepost2/wp-content/themes/atahualpa/index.php on line 2

Any idea what has happened and how to fix it?

Thanks, Graham

Is that date right?

Download a fresh copy of the theme to your over and unzip it.

Next use ftp or your cPanel's file manager and take a look at functions.php and its first few lines. Now compare it to the code you downloaded.

If they are different and there is what looks like garbage on the first few lines, your site has been hacked.

Thanks Juggledad.

Yes, that date is right. I spotted the problem the other week, but today is the first chance I've had to get to address it.

I've looked at functions.php and it all looks fine - there's nothing obviously wrong, at least.

I've only ever uploaded a theme from within WP. Where do I put the zip file (ie which subdir?) prior to unzipping it? Is there an unzip facility within cpanel?

Thanks
Graham

Does the site load the front end?
Did you make any changes, like add a new plugin?
What is the URL?

look in the folder atahualpa/functions and see if there is a file 'bfa_get_options.php'
if not re install the theme
if yes, look at line 1 and 2 and they should be

<?php if (!function_exists('bfa_get_options')) {
	function bfa_get_options() {

if not, what do you have there.

Hello Juggledad

Thanks for your help.

I installed the theme manually overlaying the existing files.

The site works fine - www.executive-post.info - but when I try to access the wp-admin page the window still clears to a blank page.

Any other ideas?

Thanks again, Graham