JPEXS Free Flash Decompiler Issue Tracker

If you are looking for the decompiler itself, visit

+ update 2020: WARNING - support of the decompiler is now VERY LIMITED. There are no active developers. This means we will NOT develop new features and/or fix most of bugs. We left the tracker running in case somebody from community would like to work on it. Sorry for the inconvenience.

List of issuesList of issues

#1395 Debug not working
Author: user castacio
Date created:
Type: bug
Visibility: Everybody
Assigned to:
State: new Help

> What steps will reproduce the problem? Try to debug Flash file using flashplayer18_0r0_333_win_sa_debug downloaded from Adobe link provided in FFDEC. I've also tried other versions downloaded from there in the 19, 20, and 21 branches with no luck. > What is the expected output? What do you see instead? Instead of taking me to the debugger interface, FFDEC seems to just hang for a bit and doesn't even open the debugger version of Flash. Finally it fails with the following error message. 07/06/2017 10:18:38 SEVERE Uncaught exception in thread: Thread-18 java.lang.NullPointerException at com.jpexs.decompiler.flash.gui.DebuggerHandler.connected( at com.jpexs.debugger.flash.Debugger$ > What version of the product are you using? Is it "nightly build"? Which operating system do you have? I'm using the latest stable 10.0.0 downloaded from the site, not the nightly, on a Windows 7 VM in virtualbox. > Please provide any additional information below. If the problem is related to a SWF file, attach it here, otherwise we can't help you. I can provide the file I'm working on if absolutely necessary but I've tried others with the same result. I just don't want to provide it initially here because it's malicious.
I just tried nightly1652 and had the same issue when trying to debug a file. I'm following all the recommended steps from the installer, so nothing special going on with my install.
Hi, do you have similar problems with current FFDec version (11.0.0) ? Did you figure out something related? I can't reproduce it. Note for AS1/2 files: On debugging AS1/2, the debug flash player shows connection window (see which you must confirm. The problem is - after clicking debug button on toolbar, you can miss the connection window if you click the FFDec window as the connection window is put into background.