The WSJT-X Development Group has released yet another new beta version of the FT4 protocol now available for testing in WSJT-X 2.1.0-rc7. The FT4 included in this “release candidate 7” version is notcompatible with any previous release. Over the weekend, the developers had made WSJT-X 2.1.0-rc6 available for downloading and testing but “because of a serious bug,” pulled that version not long afterward.
“We are aware of a serious issue with this [-rc6] release,” Bill Selwood, G4WJS, of the WSJT-X Development Group, said on June 2. “Many users are experiencing a crash on attempting to start this version. The issue is not happening for everyone, but it appears to be present on all supported platforms.” Some users of release candidate 6 expressed satisfaction with the new version.