I use wamp 2c. I create abc.htaccess with that content (php_value short_tags on) in ..\wamp\www\osticket or ..\wamp\www\osticket\upload but haven't solved.
Help me
I assume you have Windows as the OS? If this is the case, I am not sure if htaccess files are possible. One thing is for sure, abc.htaccess is not valid. An htaccess file can only be named ".htaccess" (without the quotes and nothing before the dot).
But perhaps you can try to add the following line to the main.inc.php file:
ini_set("short_open_tags", true);