Are you installing FB4 standalone, or FB4 Plug-in?
Also, are you on Mac or Win?
There's a general troubleshooting matrix by error number on this page:
Let us know if that doesn't help, and we'll take a closer look.
I am installing FB4 standalone on windows 7.
The troubleshooting matrix was of no help.
Here's what I would try next:
- Download the CS5 Clean Tool (http://www.adobe.com/support/contact/cs5clean.html) and run it to clean up any old FB4 entries.
- Install latest critical updates from Windows Update
- Download the latest version of Adobe AIR, and install it (http://get.adobe.com/air/)
- Try installing FB4 again.
The error you're getting is with the Adobe Help installation, that runs as an AIR app, so that's why I suggest you try installing AIR on its own first, as a workaround.
Let me know whether that helps at all,
I tried running CS5 clean up tool and installing AIR but that too could not solve the problem. I got the same error.
I have installed adobe help by explicitly double clicking AdobeHelp.air, and the help installed. I suppose that this will serve my purpose.