Hi all, I've just opened the default

designs/spm

design in the OpenRoad GUI tool, and I'm having difficulty viewing the "Routing Congestion" layer. If I click the checkbox next to "Routing Congestion" in the "Display Control" panel, the tools says

[WARNING GUI-0066] Heat map "Routing Congestion" has not been populated with data.

However, if I then go to

Tools

->

Heat Maps

->

Routing Congestion

, and click

Rebuild data

, the error still doesn't go away when I try to enable the layer. Any ideas as to why this may be? P.S. Curiously, the

Placement Density

heatmap works fine.