A lot of bugs in the score editor

Imported midi file.
One track looks well in all editors but the score editor.
In score editor the track (organ melody) is displayed as DRUM SET and empty.
What a bug.

Another bug:
If I switch the fullscreen score editor to windowed no more score ist displayed and the height of the window is endless.

As it says here:

If you want to change the instrument for the active track manually, you can do so on the Instrument tab of the Layout Settings dialog or by selecting Score > Change Instrument Type for Active Track.

It would be interesting to see the midi file,or a cut-down version of the cubase project. We use a few parameters to determine the instrument type automatically the first time the Score Editor is opnened on a new track, but the predominant one is just the track name. What was the name of this track?