ID:176265 Can't pack register <name> -- no packable connection to a pin

CAUSE: You assigned a location constraint to the register, forcing it to be placed in an I/O. However, the register has no valid packable connection to an I/O pin. The Fitter cannot honor the assignment because there is no I/O cell in which to pack the register.

ACTION: Relax or remove the location constraint on the register node. See previous messages describing the location constraint on the register.