This happened to multiple CIQ datafields in the same activity. I'm walking, and suddenly I see the IQ! logo. I click down to see the other page, and I see that the other CIQ datafield crashed too. This happened so far in at least 3 of my walks in the past month. I do lots of walks, so this is only a small percentage, but still it's clearly a firmware bug. Today it happened again, during a 10 minute walk 4 times. (When it happens I stop the activity, exit via the "Resume later", and then enter again to resume it, this is how it can happen more than once in a single activity).
I'm a CIQ developer, so I know that most of the time when there's a IQ! icon on the screen it means that there's a bug in the CIQ app. However this time this is not the case. There's no crash recorded in the CIQ_LOG.txt, CIQ_LOG.bak files *, thus also no error reported to the developer via the ERA Viewer.
I'm posting it here because this seems to be a bug in the fr965 firmware (26.08), and maybe more people will post about similar experience.
To see whether there's a crash report you need to connect your watch via the charging cable to a computer's USB port and then look into the GARMIN/APPS/LOGS/ folder and look if there's any file called CIQ_LOG.TXT or CIQ_LOG.YML or CIQ_LOG.BAK there with a current date. If there is then you can also look into it to see whether the last block of lines is from that day and that app that crashed on you. If there is then you just need to make sure you sync your watch via Garmin Connect and the crash will be reported to the app developer so they can fix the bug. However if there's no recent crash from the datafield then it is the same issue I'm talking about here, In this case please report it here (also post which datafield it was)
See also: Both CIQ datafields in the activity crash suddenly