i'm sorry, here is additional information. PHP error log and osTicket information.PHP Error Log:Stack trace:#0 C:\xampp\htdocs\osTicket\include\class.user.php(767): VerySimpleModel->save()#1 C:\xampp\htdocs\osTicket\include\class.user.php(172): UserEmail:('\xC0\xD2\xC7\xD4\xB5\xD2 \xC5\xD5\xE9\xCA\xA1\xD8\xC5')#2 C:\xampp\htdocs\osTicket\include\class.user.php(465): User:(Array)#3 C:\xampp\htdocs\osTicket\include\class.user.php(488): User:(Resource id #84, Array)#4 C:\xampp\htdocs\osTicket\scp\users.php(77): User:(Array)#5 {main} thrown in C:\xampp\htdocs\osTicket\include\class.orm.php on line 222 PHP Warning: opendir(C:/xampp/htdocs/osTicket/include/mpdf/tmp,C:/xampp/htdocs/osTicket/include/mpdf/tmp): The system cannot find the file specified. (code: 2) in C:\xampp\htdocs\osTicket\include\mpdf\mpdf.php on line 7502 PHP Warning: opendir(C:/xampp/htdocs/osTicket/include/mpdf/tmp): failed to open dir: No such file or directory in C:\xampp\htdocs\osTicket\include\mpdf\mpdf.php on line 7502 PHP Warning: opendir(C:/xampp/htdocs/osTicket/include/mpdf/tmp,C:/xampp/htdocs/osTicket/include/mpdf/tmp): The system cannot find the file specified. (code: 2) in C:\xampp\htdocs\osTicket\include\mpdf\mpdf.php on line 7502 PHP Warning: opendir(C:/xampp/htdocs/osTicket/include/mpdf/tmp): failed to open dir: No such file or directory in C:\xampp\htdocs\osTicket\include\mpdf\mpdf.php on line 7502 PHP Warning: opendir(C:/xampp/htdocs/osTicket/include/mpdf/tmp,C:/xampp/htdocs/osTicket/include/mpdf/tmp): The system cannot find the file specified. (code: 2) in C:\xampp\htdocs\osTicket\include\mpdf\mpdf.php on line 7502 PHP Warning: opendir(C:/xampp/htdocs/osTicket/include/mpdf/tmp): failed to open dir: No such file or directory in C:\xampp\htdocs\osTicket\include\mpdf\mpdf.php on line 7502osTicket Information: