Macintosh Troubleshooting - Troubleshooting Type 11 and Type 1 errors

Crashes and computer lockups do happen. Macintosh computers are no different. The two most common types of error you will encounter on a Macintosh are error Type 11 and Type 1. They are caused by improper RAM handling, extension conflicts, preferences file errors, corruption and other deeper, system wide errors. This is the official word from Apple on Type 11 errors:

A Type 11 error is listed as a hardware exception error. However, as with all Macintosh Type xx errors, they usually do not identify a particular software or hardware component error. Type xx errors are more general in nature.

You might experience more Type 11 errors on a Power Macintosh computer because of problems with the software-based 68k emulator. The emulator allows the RISC processor to run older Macintosh software. If the emulator gets corrupted while loading into RAM, then some of the failures caused by this are reported as errors type 11 or Hardware Exception errors. The emulator can get corrupted by either incompatible software or faulty hardware.

Here are some solutions for troubleshooting errors type 11 and 1:

• Quick Fixes - try these first
• More Advanced Solutions - if problems persist
• Conflict Test
• Allocate more memory to Netscape
• Turn off all Software based memory programs - RamDoubler, OptiMem
• Increase the Apple Disk Cache in Memory Control Panel
• Turn off Modern Memory Manager with system 7.5.3 or lower
• Upgrade MacTCP 2.0.6 or Open Transport to the newest version
• Remove the Netscape Preferences
• Rebuild the desktop
• Run MacTools, Norton Disk Doctor or Disk First Aid
• Clean Install of the System Software
• Helpful info on incompatible programs or program versions
• Further troubleshooting and suggestions

Other Apple and Netscape Article dealing with Macintosh crushes:

• An article with troubleshooting tips to help solve problems with System 7.5 Update 2.0 and a Mac OS-based computer.
• Netscape Article 971120-2: Type 11 error after install of Dial-Up Edition of Communicator
• Netscape Article 980911-9: Macintosh version of Communicator freezes, or quits with an error Type 11

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