Symptom
A Classic application:
- works but seems to be missing functions
- generates and alert box with a message that extensions or other System Folder components are missing
For example, AppleWorks 5.0.4 works but you cannot check spelling because its System Folder resources are not properly installed.
Solution
This behavior does not differ from versions of the Mac OS prior to Mac OS X 10.0. Any application that uses System Folder items must be properly installed. Use the included application installer or the instructions provided by the software publisher to place these items in the System Folder on the startup volume.
It is important to remember this necessity when the computer has more than one potential Mac OS 9 startup volume. Consider this set of circumstances and events:
1. A hard disk has two partitions, named "Disk A" and "Disk B."
2. Both partitions contain Mac OS 9 system folders.
3. Disk A is the designated Classic startup volume in System Preferences.
4. AppleWorks 5.0.4 is installed while Classic is started up from Disk A.
5. AppleWorks 5.0.4 successfully performs spell checking.
6. The Classic startup volume is changed to Disk B.
7. When Classic restarts from Disk B, AppleWorks cannot check spelling.
In this example, you would repeat the AppleWorks 5.0.4 installation process to establish proper operation when started up from either System Folder.
Note: When using an application started up alternatively from different System Folders, you will have separate preferences stored in each System Folder. If, in the example above, you restarted Classic from Disk A after using AppleWorks while started up from Disk B, your AppleWorks preferences would be just as you left them the last time you used it while started up from Disk A.
Applications that require special hardware access may not work in the Classic environment even when properly installed. See article 106184: "
Mac OS X 10.0: Access Not Provided in Classic for Certain Hardware-Oriented Applications."