We recommend importing an FBX rather than a BVH into Blender.
1. When exporting a motion recording from Smartsuit Studio, make sure you have selected the binary option and choose a version of FBX that is older than the latest (in this case 201100)
2. In blender before you import the FBX, make sure to check the Automatic Bone Orientation option.
3. Then select the FBX file and click import. After blender finishes importing the file you should see a T-posed character in the 3D view of blender.