Can anybody please help me out. I cant seem to create new article pages without getting this error.

ERROR [User Error]: Object::__call() Method 'get_static' not found in class 'FileDataObjectManager'
IN POST /admin/getitem?ID=23&ajax=1
Line 133 in /home/.margara/riotsociety/riotsociety.com.au/sapphire/core/Object.php

Source
======
124:
125:          } else if($config['function_str']) {
126:             $function = Object::$extraMethods[$this->class][strtolower($methodName)]['function'] =
create_function('$obj, $args', $config['function_str']);
127:             return $function($this, $args);
128:
129:          } else {
130:             user_error("Object::__call() Method '$methodName' in class '$this->class' an invalid format: " .
var_export(Object::$extraMethods[$this->class][$methodName],true), E_USER_ERROR);
131:          }
132:       } else {
* 133:          user_error("Object::__call() Method '$methodName' not found in class '$this->class'",
E_USER_ERROR);
134:       }
135:    }
136:
137:    /**
138:     * This function allows you to overload class creation methods, so certain classes are
139:     * always created correctly over your system.

<ul>user_error(Object::__call() Method 'get_static' not found in class 'FileDataObjectManager',256)
line 133 of Object.php

Object->__call(get_static,Array)

Object->get_static(File,allowed_file_types)
line 87 of FileDataObjectManager.php

FileDataObjectManager->__construct(ArticlePage,Resources,Resource,Attachment,Array,getCMSFields_forPopup)
line 43 of ArticlePage.php

ArticlePage->getCMSFields(CMSMain)
line 380 of CMSMain.php

CMSMain->getEditForm(23)
line 855 of LeftAndMain.php

LeftAndMain->EditForm()
line 344 of LeftAndMain.php

LeftAndMain->getitem(HTTPRequest)
line 162 of Controller.php

Controller->handleAction(HTTPRequest)
line 107 of RequestHandler.php

RequestHandler->handleRequest(HTTPRequest)
line 122 of Controller.php

Controller->handleRequest(HTTPRequest)
line 262 of Director.php

Director::handleRequest(HTTPRequest,Session)
line 106 of Director.php

Director::direct(admin/getitem)
line 115 of main.php

</ul>