The problem could be in the dsi file. If so, there should have been sort of error description reported. Because there is none, the problem could be in the BP plugin. Try importing the dsi file without the BP plugin. If it imports and can be processed clean in itself , that might indicate that an issue with the BP plugin which will need to be fixed.
If the error occurs without use of the BP plugin, something is odd with the dsi file; please attach it.