Can't say for sure without more detail, including your client platform and
level.  But as a starter, here are some things that can cause your problem:

1) You changed the options file, but did not restart the scheduler service.

2) The scheduler service was installed pointing to a different options file
(I'm assuming a Windows client)

3) Your include/exclude is pointing to a drive that your LOGON id has
permissions to access, but the SYSTEM account running the scheduler does
not.

ANy of that ring a bell?