Some apps from the App Store not launching

A few of the apps I purchased from the App Store are not launching. Most do, however.

2/15/16 4:41:39.546 AM ReadKit[1105]: Failed to check receipt signature: No valid signer

2/15/16 4:41:39.549 AM storelegacy[372]: LaunchServices: received XPC_ERROR_CONNECTION_INVALID trying to map database

2/15/16 4:41:39.549 AM storelegacy[372]: LaunchServices: disconnect event received for service com.apple.lsd.mapdIs b

2/15/16 4:41:39.549 AM storelegacy[372]: LaunchServices: Database mapping failed with result -10822, retrying

2/15/16 4:41:39.551 AM storelegacy[372]: LaunchServices: received XPC_ERROR_CONNECTION_INVALID trying to map database

2/15/16 4:41:39.551 AM storelegacy[372]: LaunchServices: disconnect event received for service com.apple.lsd.mapdb

2/15/16 4:41:39.553 AM storelegacy[372]: LaunchServices: disconnect event received for service com.apple.lsd.modifydb

2/15/16 4:41:39.554 AM storelegacy[372]: LaunchServices: disconnect event received for service com.apple.lsd.modifydb

2/15/16 4:41:39.556 AM storelegacy[372]: LaunchServices: disconnect event received for service com.apple.lsd.modifydb

2/15/16 4:41:39.557 AM storelegacy[372]: LaunchServices: disconnect event received for service com.apple.lsd.modifydb

2/15/16 4:41:39.559 AM storelegacy[372]: LaunchServices: disconnect event received for service com.apple.lsd.modifydb

2/15/16 4:41:39.561 AM storelegacy[372]: LaunchServices: disconnect event received for service com.apple.lsd.modifydb

2/15/16 4:41:39.000 AM kernel[0]: Sandbox: storelegacy(372) deny(1) mach-lookup com.apple.lsd.modifydb

Is there something I can do, or is this Apple's issue?