Open Transport is incompatible with all Assistant Toolbox versions prior to version 1.3. If you are using Mac OS 7.5.x and AppleTalk is off every time you restart your computer, check the version of Assistant Toolbox installed in your Extensions folder. You can install Assistant Toolbox v1.3 using the System 7.5 Update 2.0 Custom Install option.
If you need help checking the version number, see the section Checking the Assistance Toolbox Version.
If you are using Mac OS 7.6 or later, Assistant Toolbox is built into Mac OS 7.6, so you do not have to check the version. However, if you have a version of Assistant Toolbox installed with Mac OS 7.6, throw it away.
Checking the Assistant Toolbox Version
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Step 1
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Open the System folder.
Step 2
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Open the Extension folder.
Step 3
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Click once on the Assistant Toolbox extension.
Step 4
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Select Get Info from the File menu (CMD-I).