It can only be downloaded using the link at the bottom of this post.
Notable changes in this release:
- Fixes a regression problem with ToolBook v8.9 and v9.01 content that prevented button clicks on fields from be properly received and escalated.
- This problem only manifested itself when using the Flash streaming media player.
- Also fixes meta tag generation for v8.9 and v9.01 content with respect to the use of IE11.
- If you are not experiencing either of the problems described above, there is no need to install this release.
http://www.pgsoftwaretools.com/toolbook/phpLibrary/attachments/Install_PowerPac_583.zip