An update for the Mac and Windows versions of Notebooks is available for download from our website (Mac, PC).
The list of changes and addition is available from the version history pages (Mac, PC).
Update October 12: If you are using Notebooks on Mac OS 10.7 (Lion) you may have experienced problems editing plain text documents. This has been fixed, so just download Notebooks again and you can edit your documents as usual.
Should you have problems with the new release, you can still get the previous release from these links:
Notebooks for Mac 1.0.4 and
Notebooks for PC 1.0.4