How to extract .ssh textures?

[LanHikariDS]

I'm trying to extract some textures from Quake III Revolution that are in the .SSH format, and I can find little to no information about doing it. I've seen people can and have done it, but apparently trying to do it myself is always a big no-no, and it pisses me off to be so close to finishing a project, only to be stopped cold in my tracks.

I've heard that EAGT (Electronic Arts Graphics Tools) can do it, but whenever I try extract a texture, I get an error:
"Run-time error '9': Subscript out of range", and EAGT crashes

Does anyone know what to do? I've tried contacting TCRF's HsienKo who has seemingly done so successfully, but I've heard nothing back yet...