Invalid asm.js: Function definition doesn't match use

Hi Folks,
Trying to get debug running but I’m getting this error message in the console when I click/highlight/activate the “Callback Graph” icon in the debug dialog.


Invalid asm.js: Function definition doesn’t match use

Can anyone shed some light on where I should dig next to get this resolved? I’ve just updated to the latest Dash about a week ago, as an attempt to get debug working, and this is, hopefully, the last issue to resolve to get this going, and, searching on the message itself does not bring up anything helpful other than the obvious stated in the message itself,