A maintenance release (v1.7.16.6) is available via "check for updates" that fixes an issue with the sonar viewer when replaying files with an ' (apostrophe) in the filename. There is also a small change to the level of "land" in the 3d view, which now uses the lowest value in the finished map if that value is less than zero.

A maintenance release is available, v1.7.17.9.
This fixes a bug that can cause a crash when logging data via NMEA 0183, and an issue where the sonar channel displays are not sized correctly.

Update ReefMaster by clicking the "check for updates" button on the application start up window.