ID 196624 - Frame server failed to bind

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Problem summary
There have been some reports of users encountering the following error message:


 
Customer reported version
nuke.11.1v1
 
Customer reported platform
10.11
 
Steps to reproduce
 
1) Open two sessions of Nuke, and open a script in each of them. 
 
2) Leave the two sessions idle.
 
3) After a while notice that the following error message may be displayed:
 



 
This issue has also been reported to happen when launching Nuke Studio from the terminal.
 
Workaround
1) First, click 'Yes' on the dialog box.
2) If Nuke is no longer able to reach the frame server, you can click the refresh button �� which can be found in the bottom right corner of the window.
 
Reproduced by support
Nuke 11.1v2 - OSX El Capitan
Nuke 11.1v1 - OSX El Capitan
 
This has also been reproduced by QA.
 
Expected behaviour
No errors should occur with the frame server when there are two sessions of Nuke open.
 
Actual behaviour
The following error with the frame server appears after a while when there are two sessions of Nuke open:
 
 

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