drgaryholland,
MyEclipse Bling 10.6 supports BIRT version 3.7.0. To check the correct version of BIRT supported by MyEclipse 10.6 , go to Help > About MyEclipse Blue Edition > Installation Details > Plugins tab. Scroll down to see the BIRT entries and you can see the version listed as 3.7.0.
I am not sure why the Features shows the version as 2.6.1. I have reported it to the concerned team.
Let us know if you see any issues.