@Jens:
1) Try running a administator. Has something to do with privileges
2) It moves the highlighted text only. There is a preference (about -> preference) to always move/copy the full line
3) see above
4) The is a preference to 'keep selection'
5) move just moves the line, copy copies the line. Only when registered.
@Lost:
It does contain Doom ;-) No, seriously, the about and settings windows are the reason the filesize explodes.
I could perhaps make lightweight plugins, where you would have to edit the settings yourself. Maybe, someday, when I can find the time.