ERROR:ConstraintSystem:58 - Constraint <INST
   "*/memc?_wrapper_inst/mcb_ui_top_inst/mcb_raw_wrapper_inst/gen_term_calib.mcb_soft_calibration_top_inst/mcb_soft_calibration_inst/DONE_SOFTANDHARD_CAL*"
   TIG;>
   [E:/2013.5.29/srio_demo_4x_custom-3_2.5_16/base_platform_rtl/sp6_dsp6678_demo
   _top.ucf(149)]: INST
   "*/memc?_wrapper_inst/mcb_ui_top_inst/mcb_raw_wrapper_inst/gen_term_calib.mcb
   _soft_calibration_top_inst/mcb_soft_calibration_inst/DONE_SOFTANDHARD_CAL*"
   does not match any design objects.

这个约束老是有错粗，求指导。