Dreamweaver CS5.5 installer issue?

[Guest]

Hi. Can anyone offer a solution to the problem shown in the attached screenshot? (Mac 10.12.2) This is for an older version of Adobe Dreamweaver CS 5.5. (2011) that was deleted. I have the serial number. The download is complete and there is a desktop icon, but this (see screenshot) is as far as I can get. Note that this does not *appear* to be a security issue, since no warning is generated in security preferences regarding the origin of the application. This problem occurred downloading PE 11 but was overridable in security preferences. Command-clicking the "install.app" icon does not work either. Suggestions? –Ric

[Nancy OShea · Accepted solution]

Creative Suite products are not supported by Mac Sierra so the installers don't work as expected.  See below for possible workarounds.

Installing Creative Suite on macOS 10.12 (Sierra)

Nancy

[Guest]

Worked like a charm!  Thank you, Nancy!

[detailed_questioner16B8]

Thanks Nancy - sorted that problem out really quickly with that link - appreciate your time posting