I have been wrestling with this for over a day now. I have a Fedora 20 physical system running Firefox 38.0.5. When I go to the java site to verify my version I get an error saying The Java plugin has crashed. My version of java is at the latest. Name        : jre1.8.0_60Version     : 1.8.0_60Release     : fcsArchitecture: x86_64I also have the latest JDK installed:yum list installed *java*Loaded plugins: langpacks, refresh-packagekitInstalled Packagesjava-1.8.0-openjdk.x86_64                                  :1.8.0.45-40.b14.fc20                                     java-1.8.0-openjdk-headless.x86_64                          1:1.8.0.45-40.b14.fc20                                     And more info here:java -versionjava version 1.8.0_60Java(TM) SE Runtime Environment (build 1.8.0_60-b27)Java HotSpot(TM) 64-Bit Server VM (build 25.60-b23, mixed mode)The plugin in Firefox shows: (this is from the about:plugins in FF)Java(TM) Plug-in 11.60.2File: libnpjp2.soPath: /usr/lib64/mozilla/plugins/libnpjp2.soVersion: 11.60.2State: EnabledNext Generation Java Plug-in 11.60.2 for Mozilla browsersI have done the following:Removed, re-installed Java.Removed, re-installed FF. Tried different Java versions. Tried Opera. I am not sure what to try next. Any help is much appreciated. 
Java plugin crashing in Firefox - Fedora 20
fedora;java;firefox;plugin