# JabRef 4 Mac OS X

**URL:** <https://discourse.jabref.org/t/jabref-4-mac-os-x/936>\
**Category:** Help\
**Created:** [December 6, 2017, 3:49pm UTC](https://discourse.jabref.org/t/jabref-4-mac-os-x/936 "2017-12-06T15:49:37Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![love.pray.eat.smile](https://avatars.discourse-cdn.com/v4/letter/l/a88e4f/32.png) [@love.pray.eat.smile](https://discourse.jabref.org/u/love.pray.eat.smile)\
**Post date:** [December 6, 2017, 3:49pm UTC](https://discourse.jabref.org/t/jabref-4-mac-os-x/936/1 "2017-12-06T15:49:37Z")

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I upgraded to JabRef 4. The app launches fine, however, when I trying typing in information in the cells it stops responding ( the pinwheel is spinning). Can anyone help with this? Thank you.

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**Author:** ![tobiasdiez](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.jabref.org/tobiasdiez/32/340_2.png) [@tobiasdiez](https://discourse.jabref.org/u/tobiasdiez)\
**Post date:** [December 6, 2017, 9:03pm UTC](https://discourse.jabref.org/t/jabref-4-mac-os-x/936/2 "2017-12-06T21:03:37Z")

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We already had reports of similar issues that were solved by adding something to the host file, see the [FAQ](https://help.jabref.org/en/FAQosx#q-jabref-slowhangs-on-macos-sierra) for details. You might also try to use the most recent [development version](http://builds.jabref.org/master/), which includes some stability fixes especially for the entry editor.

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**Author:** ![love.pray.eat.smile](https://avatars.discourse-cdn.com/v4/letter/l/a88e4f/32.png) [@love.pray.eat.smile](https://discourse.jabref.org/u/love.pray.eat.smile)\
**Post date:** [December 7, 2017, 2:47pm UTC](https://discourse.jabref.org/t/jabref-4-mac-os-x/936/4 "2017-12-07T14:47:28Z")

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Hi, could someone explain to me how to do the dump? Thank you?

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**Author:** ![tobiasdiez](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.jabref.org/tobiasdiez/32/340_2.png) [@tobiasdiez](https://discourse.jabref.org/u/tobiasdiez)\
**Post date:** [December 7, 2017, 4:58pm UTC](https://discourse.jabref.org/t/jabref-4-mac-os-x/936/5 "2017-12-07T16:58:02Z")

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The dump is only helpful for debugging but I think the origin is actually the Java bug on Mac OS Sierra. Did you tried to add the local host information as suggested in the FAQ?

> #### Q: Jabref slow/hangs on MacOS Sierra
> 
> A: This is a problem some users experience in JabRef 4.0 or later on MacOS Sierra. It seems this is a bug in the networking part of Java on MacOS. You can try to add localhost explicitely to `/etc/hosts` as described [here](https://dzone.com/articles/macos-sierra-problems-with-javanetinetaddress-getl).

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**Author:** ![love.pray.eat.smile](https://avatars.discourse-cdn.com/v4/letter/l/a88e4f/32.png) [@love.pray.eat.smile](https://discourse.jabref.org/u/love.pray.eat.smile)\
**Post date:** [December 7, 2017, 10:58pm UTC](https://discourse.jabref.org/t/jabref-4-mac-os-x/936/6 "2017-12-07T22:58:45Z")

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Thanks. I tried that but it doesn’t work. I have reinstalled the 3.8 version.  
I will wait for the new update.

Thanks again.