Thanks, I've checked with find of Mate environnement of Debian, and the only editbtn.ppu is in /usr/share/lazarus/1.8.0RC3/lcl/units/x86_64-linux.
If I check in terminal with find / -name editbtn.ppu I can find:
home/stephanie/.lazarus/lib/LCLBase/units/x86_64-linux/editbtn.ppu
/home/stephanie/.local/share/Trash/files/.2.lazarus/lib/LCLBase/units/x86_64-linux/editbtn.ppu
/usr/share/lazarus/1.8.0RC3/lcl/units/x86_64-linux/editbtn.ppu
So there is the same file also in the hidden lazarus directory in the home. The Kb are the same, I think it is the same ppu due to the rebuild of lazarus. The ppu in the Trash is 202,3 Kb and not 150,4 Kb as the ppu in the /usr/share and in the /.lazarus, so I've tried to rename it as old, now with find / -name editbtn.ppu I can find:
/home/stephanie/.lazarus/lib/LCLBase/units/x86_64-linux/editbtn.ppu
/usr/share/lazarus/1.8.0RC3/lcl/units/x86_64-linux/editbtn.ppu
but the error when I compile unfortunatelly stil remains.
About the error message at the installation, if I have understood fine, it seems it isn't a great problem:
http://forum.lazarus.freepascal.org/index.php?topic=36211.0So I think it is not the cause of the problem for the EditBtn.
What might I do?
Thank you again und best regards,
Stéphanie