I know this has been asked a couple of times. I followed instructions from these ones:
Adding frameworks to project in Xcode 5 and having *relative* paths added
Try deleting Bolts.framework from linked framework and re-add it. Also, in your Framework Search Path keep path until Bolts.framework like $(PROJECT_DIR)/Bolts if it is inside Bolts folder at your project directory path.
Bolts.framework
Framework Search Path
$(PROJECT_DIR)/Bolts