[ Erik]ErikAnonymous 25 Jul 2012 12:33
Per the screenplay.com website:
The existing version of Mac Screenwriter, 6.0.7, may be safely used with Mac OS 10.7 (Lion), with no negative effect to your ongoing work.
However, you will not be able to run the following tools:
TOOLS > Compare Two Documents
TOOLS > Name Bank (used to generate random character names)
TOOLS > Thesaurus
FILE > Export To > Avid & HTML
All versions of Movie Magic Screenwriter prior to version 6 are not compatible with Mac OS 10.7 (Lion).