Hi All Some time ago I added an Open Log board to my Eggfinder Tx which I fly in the NC of my 4”. Whilst the EF Tx continues to work fine, no .txt files appear on the uSD card after flights, so I’ve been unable to create .nmea files for plotting on Google Earth etc. To be double sure, I've checked over the soldering and reflowed the joints on the Open Log , and the blue LED on the OpenLog board blinks as it did before when the TX is transmitting data (three rapid blinks, short pause, repeat). However, when I open the uSD card after a flight it still does not show either a .config.txt file nor a lognnnnn.txt - when I insert the card into an adapter and open it on my laptop, it opens as a blank field showing no file at all (I've tried this with a range of new uSD cards to ensure it wasn't just a faulty one) but in all cases no file is created. I reached out to Cris Erving who suggested I try using Notepad to create the config file 9600,26,3,0,0,0,0 to the uSD card. I did this, but unfortunately the problem persists - when I take the tracker for a walk it doesn’t record anything. Again, the EF Tx itself was working fine. Has anyone any thoughts on what might be the problem here? Any thoughts / prognoses / suggestions welcome. Thanks!