Update bvh_importer.py

Fix #4. Error reading iPi Studio BVH files.

bvh_importer.py

@@ -275,6 +275,8 @@ def _read_bvh(self, e=False):
 					# We don't really need to use Framecount and time(since Python handles file reads nicely)
 					if "Frame" not in line:
 						data = line.split(" ")
+						if len(data) > 0:
+							if data[0] == "": data.pop(0)
 
 						if self._debug:
 							print "Animating.."
@@ -315,4 +317,4 @@ def _on_select_root(self, e):
 			mc.textField(self._textfield, e=True, text=str(self._rootNode))
 
 if __name__ == "__main__":
-	dialog = BVHImporterDialog()
+	dialog = BVHImporterDialog()