Error：flash Download failed -“cortex-M0”

hi dialog
I use Proximity Tag (LDA14580_SMART_TAG_3. 20.6) project to a problem ：[ Error：flash Download failed -“cortex-M0”].The same development board in DA14580_581_583_SDK_3. 0.10.1 \ dk_apps \ keil_projectsprod_test can normal debug。
我使用Proximity Tag(LDA14580_SMART_TAG_3.20.6)工程越到一个问题 [ Error：flash Download failed -“cortex-M0”] .相同的开发板在DA14580_581_583_SDK_3.0.10.1\dk_apps\keil_projectsprod_test能够正常debug。

MDK 5.14版本
使用的MDK版本为5.14
smart_tag. Uvproj remane smart_tag. Uvprojx after use
在使用的过程中将将smart_tag.uvproj直接另为smart_tag.uvprojx后使用

JLink info:
------------
DLL: V4.96d, compiled Jan 29 2015 11:45:37
Firmware: J-Link ARM V8 compiled Nov 28 2014 13:44:46
哈rdware: V8.00
S/N : 17935099
Feature(s) : RDI,FlashDL,FlashBP,JFlash

* JLink Info: Found SWD-DP with ID 0x0BB11477
* JLink Info: Found Cortex-M0 r0p0, Little endian.
* JLink Info: FPUnit: 4 code (BP) slots and 0 literal slots
ROMTableAddr = 0xE00FF003

Target info:
------------
Device: ARMCM0
VTarget = 3.384V
State of Pins:
TCK: 0, TDI: 0, TDO: 0, TMS: 1, TRES: 1, TRST: 1
哈rdware-Breakpoints: 4
Software-Breakpoints: 8192
Watchpoints: 2
JTAG speed: 4000 kHz

No Algorithm found for: 20000000H - 2000009FH
No Algorithm found for: 20000160H - 20000323H
No Algorithm found for: 20000340H - 200003E3H
No Algorithm found for: 20000440H - 20006BD3H
Erase skipped!
Error: Flash Download failed - "Cortex-M0"
Flash Load finished at 09:54:02