When trying to enable the compilation mode, either through admin panel or through command line. Some times we get a strange behavior. Page disappears.
to fix this, disable compilation mode
Access server command line and run these commands
php -cli public_html/shell/compiler.php disable
will get output like
Content-type: text/html
Compiler include path disabled
php -cli public_html/shell/compiler.php state
Content-type: text/html
Compiler Status: Disabled
Compilation State: Compiled
Collected Files Count: 7605
Compiled Scopes Count: 4
---------- if you do not have access to command line, you may try disabling compilation related commands from config file in includes/config.php disable these lines
#define('COMPILER_INCLUDE_PATH', dirname (__FILE__).DIRECTORY_SEPARATOR.'src');
#define('COMPILER_COLLECT_PATH', dirname(__FILE__).DIRECTORY_SEPARATOR.'stat');