Dunno if anyone is still talking about the extractor or if there has been something better found. I've been trying to use it on a few games and it was already quite a pain to fix issues, from the basic stuff already fixed here, to the "heapspace" thing. Now I'm running into the next issue:
"Exception in thread "main" java.nio.BufferUnderflowException"
I'm not a Java programmer, but trust me I tried to somehow even be able to edit the Java program or use the master to edit things, but never even got to the editing part.
I have no idea how to fix it, but basically the issue comes when the program starts to analyse the "resourceGroups", somehow it just doesn't get enough bytes. The game itself is a pretty old Japanese game, like 8 or more years old and it's not really well known, I don't think there's even torrents for it anymore. Either way, I am kinda hoping that I still get a fix to my issue, or heck, have some angel come down and hand me a SRPG data.dts extractor that is easy to use/edit and works!