Problemas na instalação do Ojs 3.1.1-2

Por favor, alguém pode ajudar? Estava instalando o OJs 3.1.1-2 e aparece uma janela com essa mensagem. O que me sugerem?
ethod Application::getName() should not be called statically, assuming $this from incompatible context in /home/suima106/portalpensador.com/lib/pkp/classes/install/form/InstallForm.inc.php on line 149

Deprecated: Non-static method Application::getName() should not be called statically, assuming $this from incompatible context in /home/suima106/portalpensador.com/lib/pkp/classes/install/form/InstallForm.inc.php on line 151

Deprecated: Non-static method Application::getName() should not be called statically, assuming $this from incompatible context in /home/suima106/portalpensador.com/lib/pkp/classes/install/form/InstallForm.inc.php on line 153

Deprecated: Non-static method VersionCheck::getCurrentCodeVersion() should not be called statically, assuming $this from incompatible context in /home/suima106/portalpensador.com/lib/pkp/classes/install/form/MaintenanceForm.inc.php on line 37

Deprecated: Non-static method PKPRequest::getUserVar() should not be called statically, assuming $this from incompatible context in /home/suima106/portalpensador.com/lib/pkp/classes/form/Form.inc.php on line 369

Deprecated: Non-static method PKPRequest::_checkThis() should not be called statically, assuming $this from incompatible context in /home/suima106/portalpensador.com/lib/pkp/classes/core/PKPRequest.inc.php on line 592

Warning: Cannot modify header information - headers already sent by (output started at /home/suima106/portalpensador.com/lib/pkp/classes/install/form/InstallForm.inc.php:149) in /home/suima106/portalpensador.com/lib/pkp/classes/template/PKPTemplateManager.inc.php on line 867

Warning: Cannot modify header information - headers already sent by (output started at /home/suima106/portalpensador.com/lib/pkp/classes/install/form/InstallForm.inc.php:149) in /home/suima106/portalpensador.com/lib/pkp/classes/template/PKPTemplateManager.inc.php on line 868

parece ser incompatibilidade do PHP
verifique se a sua versão do PHP atende ao requisito do OJS 3