Doesn´t work at all

[crabo0om]

I add my .cube file, choose a folder where to put it and nothing happens. The only thing that works is that the programm closes after finishing the process of doing nothing...

[AniCator]

Do you happen to know if the .cube file you were converting was a 1D or 3D file? It is also possible it contained additional metadata that isn't handled by the program.
I've made a pull request (#5) that adds support for 1D Cube LUTs, and bypasses some of the meta data that I have spotted.
The .cube extension is used by multiple variations of the format from what I've been able to tell.