As reported by deivy petrescu, applescript can pass in [NSNull null] as the title or description if the value is missing in the calling script.  We now protect against trying to use nil or non-NSString titles and descriptions when doing the notify command.
As reported by deivy petrescu, applescript can pass in [NSNull null] as the title or description if the value is missing in the calling script.  We now protect against trying to use nil or non-NSString titles and descriptions when doing the notify command.

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