If you are experiencing unusual behavior in Avid Cinema, it is a good idea to rule out conflicts with extensions that other applications may have installed.
To do this, first save your current extension set so that you can restore it later if needed. Next, open the Extensions Manager and turn off everything except for the minimum extensions for your operation system and those that Avid Cinema requires. Here are the steps:
1. Pull down the Apple menu, highlight Control Panels, and select Extensions Manager from the Control Panels submenu.
2. Under the Sets pulldown, choose Save Set and name your current settings so that you can go back to them if you want to later.
3. Under the Sets pulldown menu, choose the selection indicating the Mac OS that you have loaded (for example: 7.5.5). This will enable only the minimum extensions and control panels needed for the operating system.
4. Using the list below, enable the additional extensions that Avid Cinema needs.
5. Restart and launch Avid Cinema.
6. See if the problem persists. If the problem is fixed, there was a conflict with one of the extensions that you turned off.
Additional System Extensions Needed By Avid Cinema
Listed below are the system extensions needed by Avid Cinema for proper operation on various systems, in addition to the minimum set of extensions needed to operate the computer:
5400, 6360, 6400- Avid Cinema Extension (this is found at the bottom of the extensions list)
- 54xx/64xx Update (this is not required if you are running 7.6.1)
- QuickTime (version 2.5)
- QuickTime PowerPlug (version 2.5)
7500/7600/8500/8600- Avid Cinema Extension (this is found at the bottom of the extensions list)
- Video Input Components
- QuickTime (version 2.5)
- QuickTime PowerPlug (version 2.5)
5500/6500- Avid Cinema Extension (this is found at the bottom of the extensions list)
- 55xx/65xx ATA Update
- 55xx/65xx Video Input Update
- AudioTuneUp
- QuickTime (version 2.5)
- QuickTime PowerPlug (version 2.5)