You could still use it with an external meter, I guess?
Of course you used the proper kind of batteries?
ME Super | The K-Mount Page
And you are super-sure you inserted them the correct way (positive side first)? I know you wrote that, but we just had a similar case on the Italian forum, with an Me Super (and that was it). And are they new and full? Are the contacts inside the battery compartment oxidized (that's quite common)? (just helping troubleshooting the issue, in the hope the meter isn't broken)
The Auto Chinon looks like a very nice lens, albeit quite inexpensive.