It is really Rapture 1.0 or the DXi version of Rapture that is missing? If it is the DXi version, it is possible to have both the DXi and current VST versions of Rapture installed. It would require removal of the current Rapture, installing the old version (authenticate using the original credentials) and patching with the files from the Rapture support page. Then re-install the add on libraries.
If you have custom samples and programs, create a copy of the current Rapture, both the "Program Files" and ProgramData directories before uninstall. Then re-integrate the files after the re-install.