I've been searching the forums for a while and I still don't get if people have managed to use TacText with FFT:C succesfully or not and how to do so. I tried with .457 and .466 (coulnd't find a download for .478, just the source code and I have no idea what to do with that) and instead of the OPEN.LZW or WORLD.LZW errors (I deleted all the kanji in those anyway), TacText hangs for about 15 minutes and then gives an error with DTE for WLDHELP.LZW, which to my knowledge doesn't have any kanji to delete. I tried both applying my text patch over the patched game and over a clean one with the same results.
Edit: Nevermind, I'm just stupid and with the directory mess I have I didn't realize that I didn't use the latest TacText version that I had and it works now... Sorry for the pointlesness :/
I'm also having this problem. I wonder if this patch is dead.
Had you actually read the full post, you would have seen that he solved the issue...