Make sure that "cache/*" is writable and then try again
Exception Object
(
    [message:protected] => Directory cache/cacheconfig/ not writable!
    [string:Exception:private] => 
    [code:protected] => 0
    [file:protected] => /var/www/allhomeworkhelp.com/chatapi/lib/core/lhtpl/tpl.php
    [line:protected] => 15
    [trace:Exception:private] => Array
        (
            [0] => Array
                (
                    [file] => /var/www/allhomeworkhelp.com/chatapi/lib/core/lhtpl/tpl.php
                    [line] => 92
                    [function] => __construct
                    [class] => erLhcoreClassCacheStorage
                    [type] => ->
                    [args] => Array
                        (
                            [0] => cache/cacheconfig/
                        )
                )
            [1] => Array
                (
                    [file] => /var/www/allhomeworkhelp.com/chatapi/modules/lhinstall/install.php
                    [line] => 26
                    [function] => erLhcoreClassTemplate
                    [class] => erLhcoreClassTemplate
                    [type] => ->
                    [args] => Array
                        (
                            [0] => lhinstall/install1.tpl.php
                        )
                )
            [2] => Array
                (
                    [file] => /var/www/allhomeworkhelp.com/chatapi/lib/core/lhcore/lhmodule.php
                    [line] => 91
                    [args] => Array
                        (
                            [0] => /var/www/allhomeworkhelp.com/chatapi/modules/lhinstall/install.php
                        )
                    [function] => include
                )
            [3] => Array
                (
                    [file] => /var/www/allhomeworkhelp.com/chatapi/lib/core/lhcore/lhmodule.php
                    [line] => 389
                    [function] => runModule
                    [class] => erLhcoreClassModule
                    [type] => ::
                    [args] => Array
                        (
                        )
                )
            [4] => Array
                (
                    [file] => /var/www/allhomeworkhelp.com/chatapi/index.php
                    [line] => 27
                    [function] => moduleInit
                    [class] => erLhcoreClassModule
                    [type] => ::
                    [args] => Array
                        (
                        )
                )
        )
    [previous:Exception:private] => 
)