I am changing the leixen.py to better detect the saved data file. It works perfectly detecting a Leixen VV-898 data file or a Jetstream JT270M data file but I am getting a failure when executing the "run_tests" utility. Leixen VV-898 Detect ←[1;41m FAILED:←[0m Failed to detect The Jetstream JT270M Detect test passes. Any ideas what it could be? Jim KC9HI