Could not satisfy the snap condition using 'Shape Center' mode.

I have the following shape:

```

LISTING: 1 element(s)

             < SHAPE >

       class         ETCH

       subclass      TOP

  element is on a dummy net

  Number of connections: 0

  Shape is solid filled

  Area:   0.655  (sq cm)

Exterior boundary: 

  segment:xy (12.00 -5.38) xy (12.00 5.12) width (0.00) 

  segment:xy (12.00 5.12) xy (5.76 5.12) width (0.00) 

  segment:xy (5.76 5.12) xy (5.76 -5.38) width (0.00) 

  segment:xy (5.76 -5.38) xy (12.00 -5.38) width (0.00) 

  Number of voids: 0

```

I do "right click/move" and then "right click/snap pick to/shape center" and Allegro says:

```
last pick: 8.32 -1.28
last pick: 8.32 -1.28
Element has no origin, using pick.
Pick new location for the element(s).
Could not satisfy the snap condition using 'Shape Center' mode.
```

Why?

I am new to Cadence software, but I think this was working last week.