Lock button is grey and can't select

[SMNovakCreate]

I may have already posted this issue, but I didnt see it in my posts so I'll assume it didnt post.
Ive run into an issue lately where my lock button won't lock, or more, I can't even select lock as its greyed out and haven't found ways to allow it to be selectable.

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[Dave R]

You did post this already but your screenshot this time makes it clear what the problem is. This is no bug, at least not a SketchUp bug. Lock works on groups and components. Your screenshot shows that you only have loose geometry selected. Create a group or component to contain the geometry and then you can lock it.