Hi experts, 

I'm using a nightly build from SDK 4.12 from a month ago, and FB 4.7. I just 
upgraded my Mac OSX from 10.6.8 (Snow Leopard) to 10.9.1 (Mavericks). 

Using the new OSX, when I rebuild the application then run it using Firefox 
with debug version of FB (I verified it is debug version by visiting a website 
showing me what version FP is running in the browser), the progress panel shows 
"Launching Main (57%). Waiting to connect to the running application..." After 
2 minutes it times out with a popup that states: 



The Flash Builder debugger failed to connect to the running application. 
Ensure that: 
1. For in-browser applications, you are running the debugger version of Flash 
Player. 
2. For network debugging on a mobile device, you have a reliable network 
connection to the device, and port 7935 is open on your machine's firewall. 

I've seen this error many times in the past, but I've always been able to 
recover it by exiting the application and browser, rebooting the machine, 
rebuilding, and running again. I've tried everything I can think of in the new 
OSX and nothing seems to change this. I verified the java version is the 
correct version for OSX 10.9.1, and that Flash Builder's .ini file for setting 
java heap size is sufficiently large (it's same settings used by OSX 10.6.8). 

A couple of other observations, if it helps... 

If I exit my web application, then start it again (still using 10.9.1), while 
it's trying to connect (e.g. before it times out), if I double-click the 
Main.html file in the bin-debug folder, the app runs fine but it runs inside a 
tab of Flash Builder 4.7 (as opposed to in the Firefox browser). 

Also, before upgrading to OSX 10.9.1, I bought an external hard drive and made 
a clone of the original hard drive when it was OSX 10.6.8. If I boot the 
computer using this clone, everything runs fine from OSX 10.6.8. If I boot 
again using the (updated original) hard drive with OSX 10.9.1, I see the error 
above. 

If I switch to Safari (instead of firefox, and try OSX 10.9.1), the application 
opens in a Safari browser window and runs, but as soon as I attempt to do an 
HTTP POST operation to the server, I get a fault with the following showing in 
the debugger: 

event : mx.rpc.events.FaultEvent 
event.fault : mx.rpc.Fault 
event.fault.faultCode="Server.Error.Request" 
event.fault.faultDetail="Error: [IOErrorEvent type="ioError" bubbles=false 
cancelable=false eventPhase=2, text="Error #2032: Stream Error. URL: 
https://www.companyname.com:443/myapp/login";] . 
event.fault.faultString="HTTP request error" 

Would really appreciate any help, as I've run out of ideas what to try next. 
Thanks in advance. 

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