I think Vue 5 will only import from up to either Poser 5 or possibly 6.  The software boffins assume everyone always upgrades ALL of their software

If you want to import into V5 you'll probably have to use an older Poser to do so, or go the old way round and export your Poser as .obj and import that instead.  I don't think Collada import was introduced to Vue back then

Gill