I thank both of you.
I have tried all suggestions and search the web for related issues but fail to configure. I think my mean problem is open_basedir restriction as stated by ctgraham in http://forum.pkp.sfu.ca/t/ojs-3-error-logs/20706, but I have not found its solution there.
My logs also says
PHP Warning: file_exists(): open_basedir restriction in effect. File(/ojs/lib/pkp/lib/vendor/moxiecode/plupload/js/i18n/en.js) is not within the allowed path(s): (C:\Inetpub\vhosts\mydomain\subdomain;C:\Windows\Temp) in C:\Inetpub\vhosts\mydomain\subdomain\ojs\lib\pkp\classes\template\PKPTemplateManager.inc.php on line 588
will be very thankful if a solution is suggested