I was using .htaccess to run an extensionless file as PHP using
<Files thumbs>
SetHandler application/x-httpd-php
</Files>
but i changed my server to a CGI/FastCGI since then this is not working. I tried online and also here but couldn't find a solution .
Also i tried
<Files "thumbs">
ForceType application/x-httpd-php
</Files>
Then the file is getting downloaded instead of executing.
Got it fixed by making application/x-httpd-php it as application/x-httpd-php5
<Files thumbs>
SetHandler application/x-httpd-php5
</Files>