PlusSpec will appear as unsigned in the SketchUp 17 Extension Manager because it is not distributed or available to purchase on the SketchUp Extension Warehouse. This will not affect the performance of PlusSpec in any way.
**If PlusSpec is not visible, you will need to re-install PlusSpec. Click Here to go to the PlusSpec downloads page.
Note: To avoid errors, please update your SketchUp to the new version 2023. Download here.
**If you have PlusSpec-related questions and concerns, please use our forum.