Error with Special Route in Encounter

Hello,

I'm doing the synthesis of a digital block, and now I'm doing its layout with enconter (v14.26).

After the automatic floorplan and the power planning, I started the Special Route. However, I get the following error and I can't go further:

**ERROR: (ENCSR-461): Cannot snap Y center of via at (103.000, 83.094, 107.000, 83.094) to manufacturing grid.

Can anyone help me to solve this problem?

Thanks!