"Trying to get property of non-object"

[XavierAntoviaque]

After completing the installation, I get the following error messages:

Warning (2): strtotime() [function.strtotime]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'UTC' for 'UTC/0.0/no DST' instead [CORE/cake/libs/cache.php, line 570]
Code | Context

$settings = array(
 "engine" => "File",
 "path" => "/var/www/cardstories.farsides.com/app/tmp/cache/persistent/",
 "prefix" => "cake_core_",
 "lock" => false,
 "serialize" => true,
 "isWindows" => false,
 "duration" => "+10 seconds",
 "probability" => 100
)

strtotime - [internal], line ??
CacheEngine::init() - CORE/cake/libs/cache.php, line 570
FileEngine::init() - CORE/cake/libs/cache/file.php, line 81
Cache::_buildEngine() - CORE/cake/libs/cache.php, line 151
Cache::config() - CORE/cake/libs/cache.php, line 126
Configure::__loadBootstrap() - CORE/cake/libs/configure.php, line 421
Configure::getInstance() - CORE/cake/libs/configure.php, line 52
include - CORE/cake/bootstrap.php, line 38
[main] - APP/webroot/index.php, line 76

( ! ) Notice: Trying to get property of non-object in /var/www/cardstories.farsides.com/cake/libs/cache/file.php on line 248
Call Stack
# Time Memory Function Location
1 0.0002 346344 {main}( ) ../index.php:0
2 0.0004 356972 include( '/var/www/cardstories.farsides.com/cake/bootstrap.php' ) ../index.php:76
3 0.0083 1495548 Configure::getInstance( ) ../bootstrap.php:38
4 0.0083 1495932 Configure->__loadBootstrap( ) ../configure.php:52
5 0.0142 2172304 Cache->config( ) ../configure.php:421
6 0.0142 2173552 Cache->_buildEngine( ) ../cache.php:126
7 0.0142 2174152 FileEngine->init( ) ../cache.php:151
8 0.0143 2174864 CacheEngine->init( ) ../file.php:81
9 0.0143 2175620 strtotime ( ) ../cache.php:570
10 0.0143 2177400 Debugger->handleError( ) ../debugger.php:0
11 0.0188 2186652 CakeLog->write( ) ../debugger.php:311
12 0.0188 2188004 CakeLog->_autoConfig( ) ../cake_log.php:232
13 0.0188 2188160 App->import( ) ../cake_log.php:180
14 0.0188 2188500 App->getInstance( ) ../configure.php:917
15 0.0188 2190392 Cache->read( ) ../configure.php:990
16 0.0189 2191884 FileEngine->read( ) ../cache.php:347
17 0.0189 2191884 FileEngine->_setKey( ) ../file.php:157

( ! ) Fatal error: Call to a member function cd() on a non-object in /var/www/cardstories.farsides.com/cake/libs/cache/file.php on line 248
Call Stack
# Time Memory Function Location
1 0.0002 346344 {main}( ) ../index.php:0
2 0.0004 356972 include( '/var/www/cardstories.farsides.com/cake/bootstrap.php' ) ../index.php:76
3 0.0083 1495548 Configure::getInstance( ) ../bootstrap.php:38
4 0.0083 1495932 Configure->__loadBootstrap( ) ../configure.php:52
5 0.0142 2172304 Cache->config( ) ../configure.php:421
6 0.0142 2173552 Cache->_buildEngine( ) ../cache.php:126