Open Transport 1.1.2 and the PowerBook 3400 are not compatible unless you follow these instructions. Open Transport 1.1.2 was released to address issues with very specific network configurations of some customers, and is not required for most Open Transport users. If you require version 1.1.2 of Open Transport for your network configuration, first install Open Transport 1.1.2, and then immediately install the Mac OS 7.6.1 Update for PowerBook 3400. This will overwrite resources which otherwise could cause crashes when switching between Infrared and LocalTalk.
A PowerBook 1400 used with the Newer Technology Ethernet card requires Ethernet driver version 1.5 or later from Newer Technology. Drivers older than version 1.5 may cause crashes. Visit Newer Technology's web site for the latest version: http://newertech.com/software.html, or call their Tech Support at 1-800-678-3726.
If the Infrared control panel is selected on a computer that does not have infrared capability, an error -192 message is displayed. The error should state that Infrared is not supported on this computer.
Improved print speed is present for some computers using third party printers over LocalTalk networks. However, Power Macintosh 5400 and 6400 computers with processor speeds less than 200 MHz without an L2 cache still exhibit slow printing. Apple is working on a solution to this problem, and will post a solution as soon possible in the same locations as this update.
Apple Video Player's Closed Caption option will cause a hang on a 68040 computer with the Apple TV Tuner card installed. Reinstalling the Apple Video Player (version 1.4) from the Mac OS 7.6 CD will remedy the problem. To reinstall, launch "Install System Software" in the Mac OS 7.6 folder within the Software Installers folder on the Mac OS 7.6 CD. Choose ˝Custom Installţ from the pop-up, then click on the triangle next to the item "Multimedia" to expand it. Select "Apple Video Player 1.4" and click "Install." When asked if the "Newer" or "Older" file should be used, select "Older."
Apple Video Player will not properly recognize a QuickTime MPEG Card when run under Mac OS 7.6 or Mac OS 7.6.1. With Mac OS 7.6.1 the QuickTime MPEG extension can be used to view MPEG files using software decompression with Apple Video Player.
If you need to use this application program, it can be downloaded from
If the sound is muted and the slider doesn═t work in Apple Video Player on a 7100/80AV, open Apple Video Player and click on the mute button to activate it. Quitting and relaunching the Apple Video Player should then remedy the problem.
If you try to import the "AppleVision 1710-9300" ColorSync profile, and the error
"Could not complete your request because a ColorSync error has occurred." appears, install AppleVision 1.5.1 to eliminate the problem.
Selecting "Mac OS 7.6.1 Base" and "Mac OS 7.6.1 All" in Extensions Manager, mistakenly turns off "Printing Lib" and printing is disabled. Manually turning on "Printing Lib" within Extensions Manager after choosing one of these sets will allow printing.
Selecting "Mac OS 7.6.1 Base" and "Mac OS 7.6.1 All" in Extensions Manager, mistakenly turns off "Monitors" control panel. Manually turning on "Monitors" within Extensions Manager after choosing one of these sets will allow access to this control panel.
If external speakers are connected to a Power Macintosh 5500 or 6500 when the computer starts up and are then disconnected, the internal speakers remains muted. Restart the computer after disconnecting the external speakers and the internal speaker will work normally.
68030- and 68040-based Macintosh computers with more than 16 MB of physical memory do not have Virtual Memory turned on after installing Mac OS 7.6.1 Update.
Windows of MPEG movies on Power Macintosh 5500 computers may exhibit white areas obscuring the movie in the window. Removing the ATI MPEG extension from the Extensions folder, or manipulating the movie window will work around the problem.
4 Avril 1997