Karma 'mtime' Error -- Issue 1494 not fixed

This issue seems to be a duplicate of Issue 1494 which was deemed resolved (I have commented in that Issue and will edit to reference this issue number).

While attempting to run Karma (v. 0.13.3) via Gulp (v. 1.2.1) using Node (v. 6.0.0) on OS X, there is a reported warning followed by a crash. The warning states "Cannot read property 'mtime' of undefined Use" as shown in the screenshot below.

Please let me know if any further information would be helpful toward resolution of this issue.