Installation fatal error and memory limit
We you install the theme you may receive an error similar to this
Fatal error: Allowed memory size of 41943040 bytes exhausted (tried to allocate 30720 bytes) in /public_html/wp-admin/includes/file.php on line 277
To fix it, please install and use the plugin Change Memory Limit to increase the memory limit of your website. If this does not work, try to read here please: http://codex.wordpress.org/Editing_wp-config.php#Increasing_memory_allocated_to_PHP
The same is when you receive an error like this
Internal Server Error
"The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log."