Thanks for the posts! I've been playing with my Oppo-203 based on your initial post and following various threads on the Internet regarding what people have done. I don't have a particular need to use a folder on my usb drive as a network mount, but here's how you do it.
<USB Root Dir>/
In AutoScript.TSS, just do something like this (which I just tested):
#MKAT 0.xx script
CLI(CLI_exec /bin/mount.cifs //192.168.1.10/Movies /mnt/sda1/Movies -o user=<username>,password=<password>,ro)
1) That's it, a one liner. I hope you didn't run the entire script originally posted, it didn't need to be that complicated and it does alter your player. For example, the very first line wipes out the password for the root user. I'm sure a firmware reflash will reset it.
2) Make sure that your player is on the network. If you plug in the USB too soon upon powerup, it may not have had enough time to establish a network connect. Try browsing the network first and make sure it's successful before plugging in the USB.
3) You'll need to use absolute paths for executables.
4) You only need the AutoScript.TSS file.
5) It still only works with SMB1, so it may be failing because of that.