warning
if you, mystical reader of this comment, you think you are a genius and you tried to copy-paste Landscape (or any other package give you a similar problem) source files from the previous version in order to keep the same path to headers, like I did when I was not knowing what I didn’t try yet, the only thing you’re gonna have is a couple of hours trying to figure out why there are duplicated class names even if you have removed all headers include…
…well, that’s because you forgot to remove that crap from the source.
[just stating here in case someone will have the same very bad idea I had a couple of weeks ago]