Unless you are talking about the path to Google plus button image URL being blocked by robots.txt?
Yes that's it.
When you click on this link in Statcounter, you get redirected to home page?
Not me the two visitors when they click on that entry it redirected them to the home page, Statecounter told me that not me.
This would imply that it was your home page that ranked for these keywords (which you should see from the next line of Statcounter tracking).
No my home page isn't ranked for these keywords, just one of my pages who should be ranked for that keyword but not anymore. but even if i tried those keywords it doesn't shows any of my pages, i don't know why statecounter tell me that the keyword is still ranked on #1, and how did those two visitors got into my website.
The encrypted searches that you noticed in Statcounter is for some other visits, I presume, and not for these two visitors, as for these two visitors you could see keywords used.