Monday, December 4, 2023 - 08:25 by Anonymous (not verified) Read status unread Listings ADT Classic Outline Error code 4 Error message Cannot continue the operation. There is another install operation in progress. Installable Units Reported ADT_Classic_Outline_Feature.feature.group,1.0.5.202308292325 Detailed Message Cannot continue the operation. There is another install operation in progress.