Hey, your editor is nice work!
I'll explain why I need rarc packer.
In ZeldaTP, there is a file LogoPalUK.arc (in Root/Res/Layout folder).
It contains this at the beginning of the game:
There are two *.bti files - first one (warning.bti) is the main text ("warning -...." etc..."), the second one (warning_pstart.bti) is "press any button...".
I successfully changed the first picture (made a title screen for a russian translation of ZeldaTP that I'm working on now):
But I can't change the second one ("press any button to continue").
This two bti files are in rarc file which contains some other bti files.
My changed "warning.bti" file became the same size that original one and I inserted it to rarc in hex-editor.
But the second one (warning_pstart.bti) becomes much bigger, so I can't insert it in hex-editor - I need to repack rarc, containing all this files, then yaz0-it and then finally put back into ISO.
I used BTI tools by Lunaboy (can be found in this thread:
http://emutalk.net/showthread.php?t=49228&page=2)
So all I need for now - is to CORRECTLY extract rarc, replace BTIs, CORRECTLY pack the rarc back and Yaz0 it. That's, basically, it...