(Arduino 101 issue) Blynk 0.4.10 - BlynkFifo2.h:115:16: error: ‘r’ was not declared in this scope

Not really… the primary point was that there are issues at Intel’s end… thus, as mentioned in a few other 101 posts… there has been no sense in Blynk working toward resolutions on their end until the source end (Intel) is fixed.

You options, for what they are worth, may only be to revert back to the “working” 0.4.8 library… which still has reliability issues with that board anyhow, as I understand it, but at least will apparently compile.