"Spark Daemon" was blocked from opening because it is not from an identified developer.

[simonexmachina]

Today the Spark hotkeys stopped working. I upgraded Spark to the latest version, didn't fix the problem. Rebooted and an error was displayed on startup saying:

"Spark Daemon" was blocked from opening because it is not from an identified developer.

Even if I run sudo spctl --master-disable then click the "Start Spark Daemon" button in the app it doesn't actually start. There does not appear to be any log messages in the Console that relate to this problem.

[simonexmachina]

I did find some Console logs for this:

default 09:54:12.962779 +1100   Spark   subsystem: com.apple.SkyLight, category: default, enable_level: 0, persist_level: 0, default_ttl: 7, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 0, enable_private_data: 0
default 09:54:13.394525 +1100   Spark   subsystem: com.apple.AppKit, category: General, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 1, privacy_setting: 0, enable_private_data: 0
error   09:54:13.399581 +1100   Spark   ERROR: Setting <private> as the first responder for window <private>, but it is in a different window (<private>)! This would eventually crash when the view is freed. The first responder will be set to nil.
<private>
default 09:54:17.815471 +1100   Spark   subsystem: com.apple.securityd, category: unixio, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 2, enable_private_data: 0
default 09:54:17.816263 +1100   lsd SecTranslocateCreateSecureDirectoryForURL: created /private/var/folders/nm/3dhqnm9x5s5dvj818qrr4yzc0000gq/T/AppTranslocation/CA2130D7-4BBA-4EB0-905A-5F2F5136CD4F/d/Spark Daemon.app
default 09:54:18.365945 +1100   kernel  AMFI: allowing exception handler for 'Spark Daemon' (8250) because the process is unsigned.

[Jean-Daniel]

Spark is now properly notarized.