I was just noticing that on the serial port at boot time, I get a message that looks like this:

...
Hijack: intercepting config.ini

': not a valid identifieropts: `Option
Saved AC volume was 85
...

Looking at a raw serial log, I see that it's really this:

/drive0/var/ttsclock: getopts: `Option ': not a valid identifier

What looks like a space after the word Option is really a ^M and confusing getopts. I don't know what effect this has on the the script...