Problem in compiling and running the dma_afu example ?

I am trying to build the dma_afu sample available in (inteldevstack_v1.2). The sample comes with a gbs file which i am able to run and test successfully. However, when I run the software with the gbs file I built myself, i get the following error.

"Running test in HW mode

No suitable slots found."

i am aware that this may happen if the FIM version is not compatible with the AFU image. However, I made sure both my gbs file and the one comes with the example have the same number. What else might be the reason I got this error ?

Here is the step I took to build the gbs according to the documentation.

afu_synth_setup --source hw/rtl/filelist.txt build_synth

cd build_synth

$OPAE_PLATFORM_ROOT/bin/run.sh

this gives me the dma_afu.gbs