I have mathematica 10 and 8 on different computers. Version 8 always shows me the error message about what goes wrong while I don't see any error message in version 10. I find it quite inconvenient as it take much time to figure out the problem. How to switch on error messages in version 10 ?

I remember that version 10 did show the warning messages, but somebody calculated something using my mathematica and all error messages were gone after that.

  • Does executing On[] help? – Karsten 7. Mar 20 '15 at 7:36
  • yes, it turns on some message if I know what kind of messages it is. Do I have to turn them on 1 by 1? – mastrok Mar 20 '15 at 8:23
  • 2
    You can try going to the menu bar Edit ▶ Preferences... and click "Reset to Defaults" under the Messages tab. – Karsten 7. Mar 20 '15 at 9:03
  • I solved it and thank you very much. – mastrok Mar 20 '15 at 9:11
  • After your code add // Quiet. – David G. Stork Mar 20 '15 at 10:21
up vote 3 down vote accepted

One thing to check is what message options are set under Global Preferences in the Option Inspector. In particular, "KernelMessageAction" should be set to "PrintToNotebook". See window capture below.

inspector

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