I am aware (sort of) of problems with path change after an upgrade. However my problem seems worse - TexShop does not give me a window after I click on the TexShop icon. It only says: TexShop cannot be opened because of a problem. Please help. 12 July, 2017.

  • Have you tried simply deleting the TeXShop app and installing the latest version? – Alan Munn Jul 12 '17 at 18:59
  • How old is your TeXShop? PS: how old is your TeX distribution? Finally, what was your previous OS version? – Herb Schulz Jul 12 '17 at 19:59
  • Thank you both for reaction. To Alan: yes I did and no change. – Jacek Jul 14 '17 at 20:25
  • To Alan: I klicked mactex2017 installer again - no change. – Jacek Jul 14 '17 at 20:38
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    I uninstalled/evicted everything related to tex as instructed by TexUserGgroup, installed tex2017 and all seems to work. Thanks, J. – Jacek Jul 14 '17 at 22:31

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