PHP error

[TSO]

One of our users is running a script. It is giving these errors. Without going into too much detail, can anyone tell what the problem is? Or do you need more info from me?

faultCode0faultStringWarning:fwrite(): supplied argument is not a valid stream resource in /home/vol4/freehosting300.com/fh300_xxxxxx/domain.freehosting300.com/htdocs/index.php on line 682faultCode0faultStringWarning:fgets(): supplied argument is not a valid stream resource in /home/vol4/freehosting300.com/fh300_xxxxxx/domain.freehosting300.com/htdocs/index.php on line 690faultCode0faultStringWarning:fclose(): supplied argument is not a valid stream resource in /home/vol4/freehosting300.com/fh300_xxxxxx/domain.freehosting300.com/htdocs/index.php on line 862