I've installed tuxguitar from binary file. After installation, there is no share/plugins in the tuxguitar directory. I tried to create it by hand and then copy there plugin, that I want to install - tuxguitar-gtp.jar. But after restarting tuxguitar, there is no 'Plugins' option available and I still can't open gtp files.
What am I doing wrong? How to install this plugin?