(See answerbase # 6331 for more tips installation tips)Here at Digidesign's Technical Support we want to make your installation and start-up process as smooth as possible. In the first few weeks since the 001 has been released we've received in Technical Support some common problems that can easily be avoided by following the guidelines below. - Please read all of the Digidesign manuals and installation documents that come with your Digi 001 digital audio system. In addition we highly recommend reading all of the manuals that make up your DAW (Digital Audio Workstation) system to familiarize yourself with the software and hardware and any books or classes on Digital Audio, Apple computers, and Audio recording. - Your CPU should have a minimum of 128 MB of RAM (192 MB recommended) If you plan to use other audio or MIDI applications with Pro Tools additional RAM is highly recommended. Not having the minimum or recommended system memory will cause your system to not launch, crashing during the launch of Pro Tools, system crashes, or DAE memory error prompts. - Make sure your memory setting are as follows. Pro Tools preferred memory should be set to @20,000-35,000k. DAE preferred memory should be set to @30,000-50,000. Pro Tools and DAE minimum memory setting should be left at its default. You can confirm this by entering a zero into the minimum field and pressing enter on the keyboard, this will default the minimum memory setting. DAE's playback buffer size (Finder/DAE/File Menu/Set Playback Buffer Size) should be set to #2 The Disk Cashe setting in the memory control panel (Apple Menu/Control Panel/Memory) should be set to 512k or lower. - Make sure virtual memory is turned off (Apple Menu/Control Panel/Memory) - Set your monitors to display 256 colors (Apple menu/Monitor's & Sound/Select Monitors/Select 256 colors for the color depth, then close the dialog). This effects the performance of your system and can directly effect PCI bandwidth issues and produce DAE 6042 errors during playback. - Enable the default set of extensions. Pro Tools requires that certain essential MAC OS System extensions be enabled in order to run properly. -Open the Apple menu/Control Panel/Extension Manager -From the Selected Set pop-up menu choose the MAC OS base set -Select "Duplicate Set" from the bottom right hand corner and name the duplicate set. -In Extension Manager scroll down and turn on OMS preferred device in the Control Panel Folder. -In Extension Manager scroll down and check DigiSystem Init, Digidesign DSP manager, and OMS in the Extension Folder.