How to troubleshoot ThreadAccessingUIException

General
1

All,

I am getting a ThreadAccessingUIException error when closing a window down. I cant seem to track down what is causing the issue. below is the stack trace.

REALbasic._UITrap Window.__Exit%%o<Window> rbframework.dylib$3143 rbframework.dylib$3119 RuntimeUnlockObject rbframework.dylib$1411 _pthread_start

so as you can see I am not doing much. I have compiled the app with 2013R3 and 2013R3.2 with the same results.

How do you suggest that I track down my error? any pointing in the right direction is greatly appreciated…

thanks
sb

2

Does anyone have a clue on how to troubleshoot/track this down?

3

Well, there’s always tear the app down piece by piece until the problem doesn’t exist, then try to remember what piece you tore off last :-). I’d start with plugins.

4

You might try the tool discussed in this blog post to see if it provides additional info:

http://www.realsoftwareblog.com/2012/10/detecting-ui-access-from-threads.html

5

Paul, I tried threadedui with my app and this is the output below.

[code]sudo ./threadedui /Users/sboss/workzone/NCM/conversions/Builds\ -\ conversions.xojo_project/Mac\ OS\ X\ \(Cocoa\ Intel\)/conversions.app
Password:
Launched /Users/sboss/workzone/NCM/conversions/Builds - conversions.xojo_project/Mac OS X (Cocoa Intel)/conversions.app/Contents/MacOS/conversions (6800)
DTrace attached to 6801
Main thread found, trace starting (may have missed some events)

          conversions`REALbasic._UITrap
          conversions`Window.__Exit%%o<Window>+0x1c
          rbframework.dylib`0x0060c700+0x13c
          rbframework.dylib`0x0060b480+0xef
          rbframework.dylib`RuntimeUnlockObject+0x59
          rbframework.dylib`0x005d9b90+0xde
          libsystem_c.dylib`_pthread_start+0x158
          libsystem_c.dylib`thread_start+0x22

Program exited, detected 1 UI operations from a thread

jayne:bin sboss$[/code]

which is basically the exactly the same output as the stack dump from before. And unfortunately this doenst help me tell what is causing the issue.

6

It looks like you’re trying to close a window from a thread. Not 100% certain on that, but I’d start there.

7

not that I know of. Do you mind if I send you the window/code? I’m pretty sure I’m being an idiot.

thanks
sb

Ps it would be tomorrow before I can send the code.

8

[quote=45035:@scott boss]not that I know of. Do you mind if I send you the window/code? I’m pretty sure I’m being an idiot.

thanks
sb

Ps it would be tomorrow before I can send the code.[/quote]
I don’t mind at all.