diff --git a/examples/DeformableDemo/GraspDeformable.cpp b/examples/DeformableDemo/GraspDeformable.cpp
index f439e9983..8fdc2752b 100644
--- a/examples/DeformableDemo/GraspDeformable.cpp
+++ b/examples/DeformableDemo/GraspDeformable.cpp
@@ -330,13 +330,12 @@ void GraspDeformable::initPhysics()
 //         b3FileUtils::findFile("bread.vtk", relative_path, 1024);
 //        b3FileUtils::findFile("ditto.vtk", relative_path, 1024);
 //        b3FileUtils::findFile("boot.vtk", relative_path, 1024);
-        std::string path(relative_path);
 //        btSoftBody* psb = btSoftBodyHelpers::CreateFromTetGenData(getDeformableDynamicsWorld()->getWorldInfo(),
 //                                                                  TetraCube::getElements(),
 //                                                                  0,
 //                                                                  TetraCube::getNodes(),
 //                                                                  false, true, true);
-        btSoftBody* psb = btSoftBodyHelpers::CreateFromVtkFile(getDeformableDynamicsWorld()->getWorldInfo(), path);
+        btSoftBody* psb = btSoftBodyHelpers::CreateFromVtkFile(getDeformableDynamicsWorld()->getWorldInfo(), relative_path);
 
 //        psb->scale(btVector3(30, 30, 30)); // for banana
         psb->scale(btVector3(.25, .25, .25));
diff --git a/src/BulletSoftBody/btSoftBodyHelpers.cpp b/src/BulletSoftBody/btSoftBodyHelpers.cpp
index 3cdf4d7bd..6c67a3b78 100644
--- a/src/BulletSoftBody/btSoftBodyHelpers.cpp
+++ b/src/BulletSoftBody/btSoftBodyHelpers.cpp
@@ -746,9 +746,9 @@ btSoftBody* btSoftBodyHelpers::CreatePatch(btSoftBodyWorldInfo& worldInfo, const
 		{
 			const btScalar tx = ix / (btScalar)(rx - 1);
             btScalar pert = perturbation * btScalar(rand())/RAND_MAX;
-            btVector4 temp1 = py1;
+            btVector3 temp1 = py1;
             temp1.setY(py1.getY() + pert);
-            btVector4 temp = py0;
+            btVector3 temp = py0;
             pert = perturbation * btScalar(rand())/RAND_MAX;
             temp.setY(py0.getY() + pert);
 			x[IDX(ix, iy)] = lerp(temp, temp1, tx);
@@ -1239,7 +1239,7 @@ if(face&&face[0])
 	return (psb);
 }
 
-btSoftBody* btSoftBodyHelpers::CreateFromVtkFile(btSoftBodyWorldInfo& worldInfo, const std::string& vtk_file)
+btSoftBody* btSoftBodyHelpers::CreateFromVtkFile(btSoftBodyWorldInfo& worldInfo, const char* vtk_file)
 {
     std::ifstream fs;
     fs.open(vtk_file);
diff --git a/src/BulletSoftBody/btSoftBodyHelpers.h b/src/BulletSoftBody/btSoftBodyHelpers.h
index 6cdeb97c3..24c86afdd 100644
--- a/src/BulletSoftBody/btSoftBodyHelpers.h
+++ b/src/BulletSoftBody/btSoftBodyHelpers.h
@@ -142,7 +142,7 @@ struct btSoftBodyHelpers
 											bool bfacelinks,
 											bool btetralinks,
 											bool bfacesfromtetras);
-    static btSoftBody* CreateFromVtkFile(btSoftBodyWorldInfo& worldInfo, const std::string& vtk_file);
+    static btSoftBody* CreateFromVtkFile(btSoftBodyWorldInfo& worldInfo, const char* vtk_file);
     static btSoftBody* CreateFromVtkFile(btSoftBodyWorldInfo& worldInfo, std::istream& in);