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Where is the Debugger or Profiler running? Flex Builder Debugger

Sez : Dan Wilson     November 27, 2007 8:10 AM

Where is the Debugger or Profiler running? Why, localhost, I presume.....

Recently I installed Flex Builder 3 on a new machine and experienced an error when running/debugging Flex applications. What would happen is:

  • I run a Flex application
  • A popup loads asking "Where is the debugger or profiler running?"
  • I select localhost
  • The popup briefly disappears
  • The popup returns asking "Where is the debugger or profiler running?"

Another message that showed up is "A connection to the debugger or profiler could not be established by Adobe Flash Player 9"

Clicking the cancel button removed the popup and continued running the Flex application. The debugger was not working properly.

After some searching and some trial and error, I found the Flex Debugger runs on port 3434. Unblocking this port in the firewall allowed the debugger to connect on localhost.

Surprisingly, this wasn't documented very well. I hope this helps someone else. Programming in Flex without the debugger makes Homer something something...

Update The popup has come back! Oddly enough, the debugger runs now. I am very glad for that. However running any compiled Flex/AIR code brings up this silly "Where is the debugger?" popup. If anyone has an idea how to supress this, please let me know.

Update: This has been solved. Details are located here. Thank You to Shannon Hicks for giving me the solution.

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11/27/07 1:24 PM # Sez Clint Modien

Shouldn't have to do this... very strange behavior for your firewall to block a request to localhost. Routing table is probably messed up.


11/27/07 2:50 PM # Sez Joe

I had the same trouble, and my window's firewall was off.


11/27/07 4:17 PM # Sez Clint Modien

I've seen the symptoms of this problem when switching to the latest version of Flex 3. It doesn't make use of the debugging popup anymore.


11/30/07 10:59 AM # Sez Jeffry Houser

I see this error all the time, and eventually gave up trying to sort it out. No firewall running on my local machine. I just assumed that the debugger is not running.

How do you get a debugger instance running w/o clicking that debug + Launch button from Flex Builder?


12/10/07 3:52 PM # Sez Miles Wilson

Also having this problem.

It has started doing it on clients machines too, which is REALLY irritating.

If anyone finds a fix for this, let us know!


12/10/07 10:59 PM # Sez Malik

Hi,

I am using Flex 3 and I just started getting this as well.

-Malik


12/14/07 4:17 PM # Sez chris markiewicz

i'm now seeing this to. started happening all of a sudden. haven't found a fix yet...


12/19/07 1:56 PM # Sez Dan Wilson

@All

Shannon Hicks gave me the solution to this. You can find details here:

http://www.nodans.com/index.cfm/2007/12/19/Fix-for...


DW


6/23/09 9:18 PM # Sez jhay

Yes i have same problem as they i installed a adobe cs4 in my computer then everytime a go to standalone player the pop up appears i search google how to fix it they say install adobe activeX i install it already but the error pops again can anyone help me from this problem


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