Just finished dinner and checked the link above - didn't take me to where I thought it would, sigh..
Here is what Sierra told me:
This problem is the result of the installation program being unable to detect
certain processors, especially the newer and faster ones. There is a two-step
procedure to resolve the issue. The first step is to delete the SIERRA.INI file.
To do this:
1) Click the Start button, go to Find, and select Files or Folders.
2) In the Find All Files window, type SIERRA.INI in the Named field.
3) Make sure the Look In field is set to the C: drive. If it does not, click the
downward-pointing arrow to the right of the Look In field and select C: from the
4) Click the Find Now button. A file marked SIERRA or SIERRA.INI will appear
after a moment in the bottom screen.
5) Click once on the word SIERRA to highlight the file.
6) Go to the File menu and select Delete.
7) When the warning box about sending the file to the Recycle Bin pops up,
click the Yes button.
The next step is to perform a modified version of the installation process.
To do this:
1) Go to the Start button and select Shut Down.
2) Select Restart the Computer and click Yes.
3) When the system has rebooted, go to the Start button and choose Run.
4) In the Open field, type X:\SETUP [for X, substitute the letter of the
CD-ROM drive] and click OK.
5) Click Install on the screen that appears.
6) Click Install on the Sierra installation screen.
7) At the prompt to perform a system test, click No.
8) Ignore the system test results and click Yes to continue.
At this point the installation will proceed normally.