Apple 6400 appendix Chapter

You can’t start an application program or it quits unexpectedly. Or, when you try to open a program, you see a message that not enough memory is available.

One of the following is probably the cause:

mThe Macintosh ran out of memory.

Quit the programs that you have open and then open the program you want to use, or restart your Macintosh.

Use the Memory control panel to turn on virtual memory. For more information on virtual memory, see the “Memory” topic of Macintosh Guide, available in the Guide (h) menu.

mThe program needs more memory.

Use the program’s Info window to give it more memory. For more information on increasing a program’s memory, see the “Memory” topic of Macintosh Guide, available in the Guide (h) menu.

mSometimes incompatible system extensions or control panels can cause software problems. Restart while holding down the Shift key to temporarily turn off all system extensions.

If your program works normally after you do this, use the Extensions Manager control panel (in the Control Panels folder in the Apple [K] menu) to turn on individual extensions and control panels. Restart after you turn on each extension. This procedure should identify incompatible extensions and control panels. (If you just added new software to your computer, its system extension is the most probable cause of the problem.) For detailed instructions, see the information about managing system extensions in the “Customizing Your Computer” topic of Macintosh Guide, available in the Guide (h) menu.

If your program performs better when a particular extension or control panel is turned off, contact the software’s manufacturer for information or an upgrade.

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