The bug is a non-critical one. It surely was easier for the shade programmers to make both applications compatible since Shade and Poser were owned by the same company and they probably could look in the source code or speak directly with the Poser development team. This is probably not so easy for the E-On programmers - priority probably is not that big for Smith Micro.

A ship in port is safe; but that is not what ships are built for.
Sail out to sea and do new things.
-"Amazing Grace" Hopper

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