Failed to open stream: Permission denied
Warning: file_put_contents(D:\PLESKVHOST\vhosts\lookntaste.in\httpdocs\vqmod/checked.cache) [function.file-put-contents]: failed to open stream: Permission denied in D:\PLESKVHOST\vhosts\lookntaste.in\httpdocs\vqmod\vqmod.php on line 251
It seems that from the error the file you are trying to open does not have readable or writable permissions. Are you using Apache to run your local web server? Try changing the permissions to 644 for D:\PLESKVHOST\vhosts\lookntaste.in\httpdocs\vqmod/checked.cache.
Best Regards,
TJ Edens