Hi all,

some of you have reported a crash on startup, thanks to those who have provided the crash report.

I can confirm there is a defect which appears to be in the underlying Qt library we use for cross platform portability. The issue is fixed in Qt v5.11 but using that will entail dropping support for macOS Yosemite (10.10), that will probably happen at the next release of WSJT-X.

In the meantime there is a workaround with some minor loss of functionality. The crash happens in code to read the LoTW user file downloaded from the ARRL LoTW web site. WSJT-X will function without that file but without highlighting of known LoTW user's CQ calls. To avoid the issue delete following file:

~/Library/"Application Support"/WSJT-X/lotw-user-activity.csv

Once deleted you should not use the "Preferences->Colors->Logbook of the World user Validation->Fetch" button until this issue is resolved.

Note that this issue is not affecting all users, if you are not seeing this crash then you may be able to continue using WSJT-X v2.1.0 without taking the action.

73
Bill
G4WJS.
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