Unable to open Notarized DMG on Catalina (works on previous os versions).

Notarization process appears to work correctly. On macOS 10.14.5 I get the "scanned for malware" dialog. However on Catalina, the DMG is rejected and I'm having a hard time to understand why.


For "spctl -a -v -t open <path>" I get

: rejected
source=Insufficient Context


For "spctl -vvv --assess --type install <path>" I get.

: accepted
source=Notarized Developer ID
origin=Developer ID Application:


Can anyone provide any information in reagrds to the error message "Insufficient Context" and any suggestions on what to do to solve it, please.

Incidentally; I can see that messages are being logged in the Console from XProtect when I try to open the DMG file. However the contents of Analysis results are obscured with <private>. Is there any way how I can see this, perhaps it will give me a clue or reason for the Notarization refusal.

Unable to open Notarized DMG on Catalina (works on previous os versions).
 
 
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