I've been testing it again. I think I may have quite a few that are either just out alighnment, or maybe on a bit bit of slope. I'll be populating some more areas soon and see if I have any luck.

I tried it a couple of times using the older small blcok, and it worked.

For this one:
1. Make sure to delete the existing walkways that might be already in place (delete them to the pillars on the other side of the road from the block).
2. Place it facing the narrow ends of GBX City Block
3. Looks at anything highlighted in red - that's what's occupying the space.

I don't know what I'm doing wrong but I cant get the parks in the right place. I have the same problems with the three parks that have walkways. I repeatedly get something else occupying space.

I know I keep nagging but any chance of another instructions video showing the correct placements of all the parts including parks and corners.

Thanks again for the best road layouts in the workshop.