The problems reported earlier with Mathematica and G5 Macintoshes have been resolved.

-------- Original Message -------- Subject: Resolution of Mathematica 5.2 problem on G5 Macintosh Systems Date: Thu, 18 Aug 2005 10:03:40 -0500 From: Wolfram Research support@wolfram.com To: will_christie@umanitoba.ca

** Follow up to important notification for users of G5 Macintosh systems **

Between approximately 8 p.m. PDT on Monday, August 15 and 12 a.m. on Thursday, August 18 Apple was distributing Security Update 2005-007 Version 1.0 for Mac OS X 10.4.2 (Tiger) through their automatic Software Update mechanism.

Due to an error on the part of Apple, this update accidentally omitted essential 64-bit system libraries, which prevented all native 64-bit applications from running, and in particular prevented Mathematica 5.2 from running on G5 systems.

Apple has now replaced the update on their download server with Security Update 2005-007 Version 1.1.

This update includes the missing 64-bit libraries and completely resolves the problem, allowing Mathematica 5.2 to run correctly.

If you are using Mathematica 5.2 on a G5 system, you should install the new update, whether or not you installed the defective one.

To install the update, choose the "Software Update..." application from the Apple menu (far left of the menu bar). The Software Update command will automatically check on the web for new updates, and should list Security Update 2005-007 Version 1.1 as being available. Click the Install button to install the update.

(The Software Update command is by default set to run automatically every week; you need to run the command explicitly to get the new update immediately.)

If you followed the instructions in our previous email to temporarily disable the 64-bit capabilities of Mathematica, you must now run the following commands in the Terminal application:

cd /Applications/Mathematica\ 5.2.app/Contents/MacOS mv MathKernel.bak MathKernel

This will restore the backed-up copy of the Mathematica kernel, returning Mathematica to full 64-bit functionality.

We regret the inconvenience caused by this problem, and appreciate the around-the-clock efforts of Apple management and staff to resolve the problem as quickly as possible.

Sincerely,

The Technical Support Team Wolfram Research, Inc.