the file sha1 (in imageinfo or allimages) is also converted before outputting, when than should all modules with hash processing should have prop=sha1base36 along with prop=sha1 to allow this. (For input in allimages there are two params).
I think maybe I know what he's saying, but the tech issues are already obscure enough that it's hard to be sure what someone is talking about even when they speak good English.