AeroPod, PowerPod and Newton

"Error 6004 occurred at 5 iBike command failures"

An error with the preceeding heading is generated after each data download from my iBike (gen III) is complete. This error just started to appear recently - within the past month.

The files seem to download just fine, and Isaac opens them just as well. So, is this a serious error? And, what can be done to fix whatever trips it? I believe it is the latest version: 2.5.0 (I just downloaded it maybe a week ago).

Thank for any help.

While I haven't been able to test it for the error yet, I decided to check for a more current version of Isaac *after* I posted the above, and, naturally, there is one: 2.6.1. So, after tomorrows ride, I see if the "6004" error persists...

*edited to add* May 30:
Well, for what it's worth, the error persists with the latest version of Isaac.

I just got Error 6004 on upload of today's ride: Isaac v3.0.2, Newton 4.14, Newton showing 13% memory used with two rides, one not yet saved.
I screen captured error and pressed Ok. Then without restarting Isaac and not touching Newton or cable, I restarted upload which went Ok.

Isaac is current and I see that there are two updates available for my Newton: 4.15 (internal build for testing) and 4.16 (compatibility with ANT+ speed sensors). Will repost if fault repeats.