Hello,
Indigo 1.0 does not support Mac OS X 10.7 because it was released
earlier. Beta versions of Indigo support Lion, and 10.6 support
actually means 10.6+. We are going to release new stable version, but
even now current beta version (1.1-beta9) is more stable than 1.0, so
you can use it.
We will also think about adding special binary for Lion in new
versions of Indigo.
Thank you for your suggestion!
Best regards,
Mikhail Kvyatkovskiy.