PyroCMS错误-未定义的属性

我在本地服务器上用Pyro创建了一个运行良好的网站。

我把它放在一个临时服务器上，它在Codeigniter系统中的model.php中抛出了一个错误。

Severity: Notice
Message: Undefined property: Pages::$session
Filename: core/Model.php
Line Number: 50

第50行为

function __get($key)
{
    $CI =& get_instance(); //50
    return $CI->$key;
}

不过，在PHP错误日志中，它记录了

Call to a member function set_flashdata() on a non-object in /var/www/vhosts/site/httpdocs/system/pyrocms/modules/modules/models/module_m.php 

调试的全部输出低于

DEBUG - 2011-07-01 11:19:00 --> Config Class Initialized
DEBUG - 2011-07-01 11:19:00 --> Hooks Class Initialized
DEBUG - 2011-07-01 11:19:00 --> Utf8 Class Initialized
DEBUG - 2011-07-01 11:19:00 --> UTF-8 Support Enabled
DEBUG - 2011-07-01 11:19:00 --> URI Class Initialized
DEBUG - 2011-07-01 11:19:00 --> Router Class Initialized
DEBUG - 2011-07-01 11:19:00 --> File loaded: system/pyrocms/modules/pages/config/routes.php
DEBUG - 2011-07-01 11:19:00 --> No URI present. Default controller set.
DEBUG - 2011-07-01 11:19:00 --> Output Class Initialized
DEBUG - 2011-07-01 11:19:00 --> Input Class Initialized
DEBUG - 2011-07-01 11:19:00 --> Global POST and COOKIE data sanitized
DEBUG - 2011-07-01 11:19:00 --> Language Class Initialized
DEBUG - 2011-07-01 11:19:00 --> Loader Class Initialized
DEBUG - 2011-07-01 11:19:00 --> Config Class Initialized
DEBUG - 2011-07-01 11:19:00 --> Loader Class Initialized
DEBUG - 2011-07-01 11:19:00 --> Config for dev environment is not found. Trying global config.
DEBUG - 2011-07-01 11:19:00 --> Config file loaded: system/pyrocms/config/asset.php
DEBUG - 2011-07-01 11:19:00 --> Config for dev environment is not found. Trying global config.
DEBUG - 2011-07-01 11:19:00 --> Config file loaded: system/pyrocms/config/language.php
DEBUG - 2011-07-01 11:19:00 --> Config for dev environment is not found. Trying global config.
DEBUG - 2011-07-01 11:19:00 --> Config file loaded: system/pyrocms/config/tags.php
DEBUG - 2011-07-01 11:19:00 --> Helper loaded: debug_helper
DEBUG - 2011-07-01 11:19:00 --> Helper loaded: url_helper
DEBUG - 2011-07-01 11:19:01 --> Helper loaded: form_helper
DEBUG - 2011-07-01 11:19:01 --> Helper loaded: text_helper
DEBUG - 2011-07-01 11:19:01 --> Helper loaded: string_helper
DEBUG - 2011-07-01 11:19:01 --> Helper loaded: language_helper
DEBUG - 2011-07-01 11:19:01 --> Helper loaded: asset_helper
DEBUG - 2011-07-01 11:19:01 --> Helper loaded: pagination_helper
DEBUG - 2011-07-01 11:19:01 --> Helper loaded: array_helper
DEBUG - 2011-07-01 11:19:01 --> Helper loaded: gravatar_helper
DEBUG - 2011-07-01 11:19:01 --> File loaded: system/pyrocms/modules/comments/helpers/comments_helper.php
DEBUG - 2011-07-01 11:19:01 --> File loaded: system/pyrocms/modules/modules/helpers/module_helper.php
DEBUG - 2011-07-01 11:19:01 --> File loaded: system/pyrocms/modules/users/helpers/user_helper.php
DEBUG - 2011-07-01 11:19:01 --> Language file loaded: language/english/main_lang.php
DEBUG - 2011-07-01 11:19:01 --> Language file loaded: language/english/errors_lang.php
DEBUG - 2011-07-01 11:19:01 --> File loaded: system/pyrocms/modules/users/language/english/user_lang.php
DEBUG - 2011-07-01 11:19:01 --> Database config for dev environment is not found. Trying global config.
DEBUG - 2011-07-01 11:19:01 --> Database Driver Class Initialized
DEBUG - 2011-07-01 11:19:01 --> Model Class Initialized
DEBUG - 2011-07-01 11:19:01 --> Helper loaded: inflector_helper
DEBUG - 2011-07-01 11:19:01 --> File loaded: system/pyrocms/modules/modules/models/module_m.php
DEBUG - 2011-07-01 11:19:01 --> Model Class Initialized
DEBUG - 2011-07-01 11:19:01 --> File loaded: system/pyrocms/modules/modules/helpers/module_helper.php
ERROR - 2011-07-01 11:19:01 --> Severity: Notice  --> unserialize() [<a href='function.unserialize'>function.unserialize</a>]: Error at offset 167 of 1315 bytes /var/www/vhosts/site_here/httpdocs/system/pyrocms/modules/modules/models/module_m.php 191
ERROR - 2011-07-01 11:19:01 --> Severity: Notice  --> Undefined property: Pages::$session /var/www/vhosts/site_here/httpdocs/system/codeigniter/core/Model.php 50

我不知道这是否是服务器上的配置问题，但这些是我没有更改的核心文件。

有什么想法吗？

Ta。