I am skipping the standard reporting template because this is a simpler bug report and the sections are not relevant.
The release page for v1.9.0 has no installer binaries! See here:
https://github.com/openstudiocoalition/OpenStudioApplication/releases/tag/v1.9.0
Note that only the 2 source packages are there in the assets!
Compare to the v1.8.0 release, and the v1.9.0-rc1 release candidate. Both of those have all the expected installers.