I am not near a Windows machine at the moment, but I just tried this on Linux using the data from https://brainsuite.org/tutorials/dtiexercise/ and it started. I copied the arguments from your post.
I will try it on Windows later today and get back to you.
BrainSuiteTutorialDWI>/opt/BrainSuite21a/bdp/bdp.sh 2523412.bfc.nii.gz --tensor --nii 2523412.dwi.nii.gz -g 2523412.dwi.bvec -b 2523412.dwi.bval
BDP Version: 21a (build #0081), released 2021-05-05
================================================================================
Setting up dataset and inputs
================================================================================
Reading input flags...
Checking input files...
.mask.nii.gz file found: 2523412.mask.nii.gz
BDP will use this file as brain mask. You can specify a custom brain mask by
using flag --t1-mask . The custom mask must overlay correctly
with input BFC image in BrainSuite.
Processing data with fileprefix:
2523412
================================================================================
Co-registration and Distortion Correction
================================================================================
Reading the input parameters for co-registration...
Total memory (physical+swap) found: 126.53GB