JPEXS Free Flash Decompiler Issue Tracker

If you are looking for the decompiler itself, visit

: WARNING - support of the decompiler is now VERY LIMITED. There are no active developers. This means waiting times in the issue tracker are very long and mostly depend on community. Sorry for the inconvenience.

List of issuesList of issues

#1499 ffdec fails to start: Could not initialize class com.jpexs.decompiler.flash.configuration.Configuration
Author: user nnyby
Date created:
Type: bug
Visibility: Everybody
Assigned to:
State: new Help

> What steps will reproduce the problem? Running ffdec on Debian buster, with this java version: $ java -version openjdk version "11.0.1" 2018-10-16 OpenJDK Runtime Environment (build 11.0.1+13-Debian-2) OpenJDK 64-Bit Server VM (build 11.0.1+13-Debian-2, mixed mode, sharing) > What is the expected output? What do you see instead? I expect the program to start. Instead I see: $ ffdec /usr/bin/ffdec: line 30: [: too many arguments /usr/bin/ffdec: line 32: [: too many arguments /usr/bin/ffdec: line 36: [: too many arguments /usr/bin/ffdec: line 38: [: too many arguments /usr/bin/ffdec: line 42: [: too many arguments /usr/bin/ffdec: line 44: [: too many arguments /usr/bin/ffdec: line 48: [: too many arguments WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.jpexs.decompiler.flash.configuration.Configuration (file:/usr/share/java/ffdec/lib/ffdec_lib.jar) to field java.lang.reflect.Field.modifiers WARNING: Please consider reporting this to the maintainers of com.jpexs.decompiler.flash.configuration.Configuration WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Nov 28, 2018 2:23:31 PM com.jpexs.decompiler.flash.gui.Main main SEVERE: Failed to load plugins java.lang.Error: Can not set static final com.jpexs.decompiler.flash.configuration.ConfigurationItem field com.jpexs.decompiler.flash.configuration.Configuration.registerNameFormat to com.jpexs.decompiler.flash.configuration.ConfigurationItem at com.jpexs.decompiler.flash.configuration.Configuration.setConfigurationFields(Configuratio at com.jpexs.decompiler.flash.configuration.Configuration.<clinit>( at com.jpexs.decompiler.flash.helpers.SWFDecompilerPlugin.getPluginsDir(SWFDecompilerPlugin.j ava:61) at com.jpexs.decompiler.flash.helpers.SWFDecompilerPlugin.loadPlugins(SWFDecompilerPlugin.jav a:78) at com.jpexs.decompiler.flash.gui.Main.main( Exception in thread "main" java.lang.NoClassDefFoundError: Could not initialize class com.jpexs.decompiler.flash.configuration.Configuration at com.jpexs.decompiler.flash.gui.Main.main( > What version of the product are you using? Is it "nightly build"? Which operating system do you have? I can reproduce this problem on ffdec 11.1.0, 11.2.0, and 11.2.0 nightly 1710. That definitely points to a java installation issue, but I'm not sure how to proceed. I had ffdec working on this computer, and now it's giving me this error.
Downgrading to openjdk 10.0.2 fixed the problem for me!
This error appears on openjdk 13. You can fix this by switching to jre 8. Add this export JAVA_HOME=`/usr/libexec/java_home -v 1.8` to, after row # FFDec requires Oracle Java 8