Buenos Dias durante la instalación de SugarCRM por separado, se me ha presentado este error

Errors have been detected during compatibility check. In order for your SugarCRM Installation to function properly, please take the proper steps to address the issues listed below and either press the recheck button, or try installing again.

FastCGI We detect that you are not using a FastCGI handler mapping for PHP. You will need to install/configure a version that is compatible with the Sugar application. Please consult the Compatibility Matrix in the Release Notes for supported Versions

Database unavailable Database Support was not found. Please make sure you have the necessary drivers for one of the following supported Database Types: MySQL, MS SQLServer, or Oracle. You might need to uncomment the extension in the php.ini file, or recompile with the right binary file, depending on your version of PHP. Please refer to your PHP Manual for more information on how to enable Database Support.

MB Strings Module Functions associated with the Multibyte Strings PHP extension (mbstring) that are needed by the Sugar application were not found.

Generally, the mbstring module is not enabled by default in PHP and must be activated with --enable-mbstring when the PHP binary is built. Please refer to your PHP Manual for more information on how to enable mbstring support.

Session Save Path Setting The session.save_path setting in your php configuration file (php.ini) is not set or is set to a folder which did not exist. You might need to set the save_path setting in php.ini or verify that the folder sets in save_path exist.

no entiendo por que me esta molestantando con las ext, si las tengo activas segui los pasos que se indican en varias paginas de internet para configurar PHP, la version que uso es php 5.2.13 y la de sugar es SugarCRM 5.5.2, la base de datos esta en SQL Server 2005.

Me gustaria saber en que he fallado y como lo puedo solucionar, espero me puedan ayudar y gracias por la atención prestada