I've got a version 1.2 landscape which won't open properly in 1.3 or 1.4. The ground is completely missing when opened in a newer version. Is there a way to fix this?

Yes, updating the save for sculpting broke that, but there is a work around, simply Left Ctrl click on any landscape icon and the terrain will load in without destroying your scene.

Thanks, that helped. For those in the same situation: ctrl-left-clicking adds the landscape you are clicking on without removing anything else. You have to check shape en colours in Flowscape 1.2 before restoring them in 1.4. This allows you to correct them to the original ones.