My problem with SR1 was with dyn cloth props I've created with Truespace.  As I loaded the prop, enter the cloth room, my system freezes up as I try and "clothify" the prop.

Other simuliar props had the same issue.

I uninstalled Poser 7, then reinstalled it.  Re-downloaded and reinstalled SR1 from eFrontiers and had no more problems.

I'm using the english version of Poser 7.  And I did change my regional settings as well.

The only other issue I saw with SR1 was regards to exporting to jpg.  The image quality seems to very low.