Narrative:

I was working a visually busy session and I climbed the embraer. When I realized he was in conflict with the caravan, I descended the embraer.

Google
 

Original NASA ASRS Text

Title: ZBW CTLR EXPERIENCED OPERROR AT 11000 FT WITH CLBING AND LEVEL ACFT.

Narrative: I WAS WORKING A VISUALLY BUSY SESSION AND I CLBED THE EMBRAER. WHEN I REALIZED HE WAS IN CONFLICT WITH THE CARAVAN, I DSNDED THE EMBRAER.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.