Blank admin pages after install

Oh yes, memory limit is at 100m

Wow…

When I do this:
define( ‘AI1EC_DEBUG’, true );

The admin pages show again. Set it to false and they are blank.

Obviously we can’t run with DEBUG true all the time, so this isn’t a solution.

No obviously it’s not a solution. When you say it renders some amount of the header, do you see any error in the header?It might be hidden somewhere.
Also try to add

function shutdown() {
    	$error = error_get_last();
	echo '<pre>';
	var_dump($error);
	echo '</pre>';
}

register_shutdown_function('shutdown');

at the beginning of all-in-one-event-calendar.php

It can’t be memory, debug mode consume more memory when turned on obviously.