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Mathematica crashes when I type in a few characters. This has been addressed and solved before on the forum. The answer is that a very large file has been created, and once you delete it, the problem is solved.

However, I am running Mathematica 10.2.0.0 on Mac OS X 10.11.6 (15G1421) and the file and its path are specified for Ubuntu and Windows. I can't find the file by either following the path or using "Spotlight".

The file is apparently called "CodeAssistHistory10.3.m", at least on other operating systems. A link to the prior discussion is

Segmentation fault on auto-complete

Does anybody know where I can find this errant file?

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  • $\begingroup$ You should look in this folder: ~/Library/Mathematica/SystemFiles/FrontEnd/SystemResources/FunctionalFrequency/. Note that Library folder is usually hidden in OS X. To get there use Finder's menu Go to and press shift key to see Library. $\endgroup$
    – Ray Shadow
    Apr 17, 2017 at 14:02
  • $\begingroup$ I have been getting the Spinning ball on Mac OS X 10.9.5 again since installing to 11.1 when inserting the cursor into something as an empty or new cell. I will also try this to see if it fixes. The problem went away in one of the 11.0x releases ... but now it is back. $\endgroup$
    – wolfies
    Apr 17, 2017 at 14:42
  • $\begingroup$ Shadowray - Thank you. It didn't occur to me that Mathematica would dynamically change $UserBaseDirectory, or that files in this directory would be invisible to Spotlight. Anyway, yes, I looked there, found the file, and deleted the >250MB CodeAssist file that I found there. All is good now. $\endgroup$
    – Jim Napolitano
    Apr 18, 2017 at 15:42

1 Answer 1

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On Mac OS X the CodeAssistHistory files are stored in the following folder:

~/Library/Mathematica/SystemFiles/FrontEnd/SystemResources/FunctionalFrequency/

Note that Library folder is usually hidden from Finder and Spotlight in OS X. To get there use Finder's menu Go to and press shift key to see Library option.

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