I've been using RaceChrono for a while and it was running reliably. However I've run into the same two problems on my last two track days. Around the third session of the day the app locked up mid session. Then on my last session of the day the app never detected the start of the session. Is there an error log that I can look at to see why it's having problems?
I'm using version 7.6.3 with an OBDLink MX+ and Dual XGPS150A.