uniflash烧写时提示;can not read property 'DS' of undefined

uniflash烧写时提示;can not read property 'DS' of undefined

SDK:simplelink_cc2640r2_sdk_3_20_00_21 , 例程:rfPacketTx_CC2640R2_LAUNCHXL_tirtos_ccs,芯片: CC2640R2F,CCS  9.0.1.00004