I wasn't suggesting that you change everything to an int - just that if the code isn't (completely) re-entrant, then it doesn't make sense to use the re-entrant form of strtok().
I'm glad that you've gotten it working, but the credit goes to you and zoomcat. You're the ones doing all the heavy lifting here - while I've just been along for the ride (in the hope that I might learn a bit by joining in the conversation).
Good job!