Some of our customers reported that they had problems saving their Highend Options. In most cases the reason for that was that PHP memory limits were set too low.
The solution is to increase your memory limits by following the steps below:
1. You will need to access your WordPress folder ( folder where you installed WordPress )
3. Right after the first line, add these two lines of code:
define( 'WP_MEMORY_LIMIT', '128M' ); set_time_limit(400);
4. Save the changes (and re-upload the file)
Take a look at the attached screenshot to see how it should look like.
Again, this error is not theme related.
It’s a standard procedure of increasing memory limit in WordPress.
More information available at these links: