Hi
This from the system log - otherwise I can't see any other messages..
May 20 09:43:31 Dom-Henrys-iMac com.apple.xpc.launchd[1] (com.bitrock.appinstaller.21896[11541]): Service exited with abnormal code: 1
May 20 09:43:41 Dom-Henrys-iMac com.apple.xpc.launchd[1] (com.apple.quicklook[11559]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook