MAVFtp and Create_Terrain.py Issues on Plane 4.06 beta

ArduPlane Plane 4.0
1

When using the create_terrain.py script, running on Ubuntu 20.04 with python 3.8.2, I randomly get the following two warnings: (I never could get the script to run under windows)

  1. create_terrain.py:205: DeprecationWarning: PY_SSIZE_T_CLEAN will be required for ‘#’ formats
    block.crc = crc16.crc16xmodem(buf)
  2. create_terrain.py:223: DeprecationWarning: PY_SSIZE_T_CLEAN will be required for ‘#’ formats
    crc2 = crc16.crc16xmodem(buf[:1821])

When I upload (USB2, no hub) these dat files through the new MAVFtp function on 4.06 beta I randomly get this error which cancels the upload:
Exception of type ‘Ionic.ZipBadCrcException’ was thrown.
at MissionPlanner.Controls.MavFTPUI.<>c_DisplayClass13_0.b_2(IProgressReporterDialogueiprd)
at MissionPlanner.Controls.ProgressReporterDialogue.RunBackgroundOperation(Objecto)

Usually if I keep trying the same file will eventually upload. It leaves me questioning whether or not the files are actually ok.

2

Open an issue on github please

3

Issue opened for the create_terrain.py script and issue opened for MAVFtp.