Communications Breakdown error using inline edit in JIRA 5.1

Question

Has anyone encountered a "Communications Breakdown" error message when trying to save a change using inline edit on an issue in a JIRA 5.1 instance?  I don't see anything when I search for that term.

We are testing JIRA 5.1 for upgrade from a 4.4.1 installation.  Editing fields using the standard Edit button to load the edit page works.  With inline edit, though, clicking the checkmark button after making a change will not save anything; it generates the error message and the field loading animation continues to spin until you reload the page.

Jobin Kuruvilla [Adaptavist] · Accepted Answer

That is a generic error that comes during AJAX calls to the server side code. You will be able to find the actual error message in the log files. Have a look in the atlassian-jira.log file.