Note: If you had previously installed a "repack," you must first delete all leftover files from C:\Users\[YourName]\AppData\Roaming\SketchUp\SketchUp 2021\SketchUp\Plugins\ to prevent crashes.

Ensure the repack is specifically optimized for SketchUp 2021 . Using a repack meant for older versions (like 2017) can lead to Ruby script errors.

The 1001bit plugin is a comprehensive library of 3D models and textures that can significantly enhance the SketchUp experience. With over 10,000 3D models and thousands of textures, this plugin provides users with a vast array of assets to create realistic and detailed designs. The plugin is particularly useful for architects, interior designers, and landscape architects who require a wide range of objects and materials to create accurate and visually appealing designs.

Go to View > Toolbars , scroll down to find 1001bit Pro, and check the box next to it.

Cracked RBZ files often modify SketchUp’s registry or execute arbitrary Ruby code. Symptoms include:

SketchUp 2021 uses Ruby 2.7. Legitimate 1001Bit Pro v2.1 for SU2021 uses specific C extensions. A repack from 2019 (meant for SU2018) will crash SU2021 immediately. Most "universal repacks" are fake.