Have been using fldigi smoothly for a couple of months, running on a MacBook Pro, OS 10. Suddenly the waterfall is blank (black). Have not changed any settings that I know of. Downloaded the lastest version of fldigi and restarted the MBP a couple of times, tried every possible audio codex combinations, no go. FTdx3000/Signalink. Wondering if anyone has a recommendation as to what I might try next? Jan, N2AE
Jan, I had the same issue and the fix was to trash the fldigi_def.xml and fldigi.prefs file and uaws a zipped version I saved a few days before when everything was working. 73 and GL Dick AA5VU
Had this problem. For me, it turned out that the settings next to the WF button were changed from 0 & 60 to 0 & 16. Once I changed it back to 0 & 60, signals showed up again.