Hey Guys, I'm new here, but an older (and retired )warrior from l2 :D
Here is the fix for GRACIA (working fine on interlude too):
Download: https://drive.google.com/folderview?id=0B49oZSU1jmsBZ05qNEJoQjk5VHM
First, do a backup from original system folder;
Access your system folder and delete l2.exe;
Copy downloaded archives to the system folder (replace archives if necessary);
Rename the L2.bin to anything you want (just for a while);
Rename the new L2.exe to L2.bin;
Rename the older L2.bin that you changed name before to L2.exe;
Execute L2.exe;
Enjoy!
FOR INTERLUDE:
Just replace engine.dll with this: https://yadi.sk/d/_zsGjwGiiGTZX
I hope this help!
PS.: Sorry for my bad english.