Compile pk4.3 for STM32 has no HEX FILE

Today ,I compile pk4.3 for STM32 , no errors ,some warnings, environment is WIN7 VS2010 MDK4.54 ,the command is:msbuild /t:build /p:flavor=release;memory=flash
the ER_FLASH file in the path(BuildOutput\THUMB2\MDK4.54\le\FLASH\release\STM32Stamp\bin\tinyclr.hex),but the file is not HEX format ,the content like this :
S315080000000CE000201D00000831000008310000083F
S3150800001031000008310000083100000800F09ABFDE
S31508000020DFF808D000F0CDFF01F05CB8F84F0020EB
S31508000030FEE76E2900F02084702900F07185662994
S31508000040AFF300806529AFF300806729AFF300801E
S315080000506129AFF3008003681B0A28BF41F08001BD

the MFDeploy can recognized, but the Flash Loader Demo.exe can’t load the file . so i can’t download the fireware to STM32, how can i compile the PK4.3 for stm32 to generate the HEX file? thanks!

rename ER_FLASH to ER_FLASH.bin