Copy and past in another file is not working in SH..

.. if you open the second file from the File > Open...

Thanks, now I understand why it works when I close down and re-open the files.

Anybody has some advice apart from buying a more powerful computer?

- Increase memory (in FAQ)
- Put stuff you do not need on hidden levels.
- Un-check visible.
- Enable displaying of Model size in furniture list and purge big models.
- Use simpler models for the initial process and replace later (see SF 3D models 261, scroll down for compromises).