This error is caused by the macOS extended file attributes which result in app signature verification failure. We are not sure what the root cause of this issue is and it seems to affect only a very small percentage of users. The solution, however, is very simple and does not introduce any security risks. You simply have to remove the extended file attributes on the package.

  1. Open by navigating to the utilities folder within the applications folder.
  2. Type the command below (where ~/Downloads/ is the path to the file you extracted)
    xattr -rc ~/Downloads/