エラーメッセージの赤いブロックを黒く修復出来た！
*. Download all files from "CC11XX decoder block" site
http://github.com/andrepuschmann/gr-cc11xx
*. Copy "cc11xx_cc11xx_deframer_bb.xml" in "gr-cc11xx-master-grc" folder
*. Paste in this xml.file in GNURadio folder as follows
C:\Program Files\GNURadio-3.7\share\gnuradio\grc\blocks\cc11xx_cc11xx_deframer_bb.xml
