The reason you are struggling to find a working "fixed" version is that the original Instant Roof is outdated. It was written for Ruby 2.0. SketchUp 2024 uses Ruby 3.0+.
The plugin for SketchUp is an automated tool developed by Chuck Vali of Vali Architects that generates complex roof structures like gables, hips, and Dutch gables from simple faces or edges . While users often search for "fixed" or "cracked" free versions, these are strongly discouraged due to security risks and software instability. Instead, the plugin is officially available through a subscription model or as a limited free version for older software versions. Official Versions & Pricing instant roof plugin for sketchup free download fixed