Agree with stormchaser. Thank you replicand for links to informative technical explanaitions. I appreciate it very much.
Been looking into the matter at similar places and it seems the acute problem with Poser still remains with stability. Much functionallity have been added indeed, but the mayor issues following along through the versions, causing unexpected crashes and what not still remain unattended or not solved, leaving the problem of not knowing wether the functionality will actually perform through or not.  Unfortunately, it seems too be something a Poser user will have to learn to live with and counteract for ...

But thank you ones again, replicand, for your help !!   :)