[OS X TeX] weird behavior

Luis Sequeira lfsequeira at gmail.com
Thu Jul 21 10:30:44 CEST 2016

> I just recently (last few days) updated my TeXShop to version 3.65 and the first time I tried to use it I am getting the following very strange behavior?it sounds like an OS X problem, but it only started after the TexShop change, so I am going here first.
> I have a TeX source file which I want to copy and modify.  I duplicate it via command-D.  The icon next to the copy turns from a tex source icon to a word document icon?the listing in finder still says it is a tex document, but when I try to open it I get a message saying that I need to be signed in to Communicator to view a contact list, and I get a box to sign in to Communicator.  For context, I have used word, but never communicator, in the past.
> I just checked, and it is not the copy that is the problem.  If I try to open the original tex file I get the same error message.
> Any suggestions?
> Zbigniew Nitecki
> Department of Mathematics
> Tufts University
> Medford, MA 02155

This is has nothing to do with TeXShop. 

It could be a problem with the LaunchServices database - which tells the Finder which program it should call to open any given file.
There are few easy things you can do:

Quick workarounds:
 - control-click, choose Open With... and choose TexShop
 - drag over to the TeXShop icon in the Applications folder or the Dock
 - use File->Open in TeXShop

Possible solution:
 rebuild LaunchServices database:

Open Terminal paste the following line (it is a single, very long line) and press enter:

 /System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister -kill -r -domain local -domain system -domain user


Luís Sequeira

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