I had the same problem. I tried installing the poser installer into an empty directory and found it was only installing the Daz Studio files. I looked more carefully and saw the dpc and the trx installers were exactly the same size.
I think the poser installer is just a copy of the Daz Studio installer with the wrong file name. Any idea when they finish their new year break?
File size isn’t necessarily a perfect indicator, usually a good one, but not always…if you can and have both files, try running an MD5 checksum on them. If you don’t have a utility that will do it, most optical disk burning software has the capability…
It makes reporting this kind of bug easier when you can say, “Hey, I’ve got checksums on both the files and they match.”, especially when it’s pretty obvious that they shouldn’t be matching.