I have a CGI script which works well at other hosting services (Hetzner, Home). However, it does not work at OVH. I keep getting the 500 Internal Server Error.
It is a C++ program compiled with a 64-bit Linux. I gave it 755 permissions. Playing with .htaccess does not seem to change anything (I tried adding Options +ExecCGI but this seems to be the default anyway). What am I doing wrong?