Linux: ad a file to an article -> JabRef freezes

[JoKalliauer]

JabRef 4.1-dev--snapshot--2017-10-09--master--1b030b459
Linux 4.10.0-37-generic amd64 
Java 1.8.0_144

also with

JabRef 4.0
Linux 4.10.0-37-generic amd64 
Java 1.8.0_144

Steps to reproduce:

1. Double click on article
2. Go to General
3. on the right side of File click on the first icon Open
4. Select any file
5. Click on Open

My Log details here: (but I think they will be useless)

Terminal Message (nothing from this error)

``` jkalliau@jkalliau-Z87M-D3H:~/prgm$ java -jar JabRef-4.1-dev--snapshot--2017-10-09--master--1b030b459.jar AI: INFO 13-10-2017 19:32, 20: Configuration file has been successfully found as resource 19:32:17.470 [AWT-EventQueue-0] INFO org.jabref.logic.importer.OpenDatabase - Opening: /home/jkalliau/Desktop/jk.bib File: grouptree.fxml not found, attempting with camel case File: grouptree.css not found, attempting with camel case ANTLR Tool version 4.5.3 used for code generation does not match the current runtime version 4.7ANTLR Runtime version 4.5.3 used for parser compilation does not match the current runtime version 4.7ANTLR Tool version 4.5.3 used for code generation does not match the current runtime version 4.7ANTLR Runtime version 4.5.3 used for parser compilation does not match the current runtime version 4.7ANTLR Tool version 4.5.3 used for code generation does not match the current runtime version 4.7ANTLR Runtime version 4.5.3 used for parser compilation does not match the current runtime version 4.7ANTLR Tool version 4.5.3 used for code generation does not match the current runtime version 4.7ANTLR Runtime version 4.5.3 used for parser compilation does not match the current runtime version 4.7Killed ```

Log File (till just before freezing)

``` Opening: /home/jkalliau/Desktop/jk.bib ```

[Siedlerchr]

I can not reproduce this under Ubuntu16.04.3 LTS (Xfce) works as expected.
You could try to change the Look and Feel. Other users reported problems with GTK L&F

[JoKalliauer]

Thank you very much, that solved the problem.

Does not work JabRef frezzes

• com.sun.java.swing.plaf.gtk.GTKLookAndFeel

Does work:

• javax.sing.plaf.metal.MetalLookAndFeel
• com.jgoodies.looks.plastic.Plastic3DLookAndFeel

Warning: Unable to find the reuested look and feel and thus the default one is used.:

• com.jgoodies.looks.windows.WindowsLookAndFeel

Can I change the "Default look and feel"?

[tobiasdiez]

No the default look and feel is hard-coded for every operating system. I'm glad that you were able to resolve your issue.