diff --git a/python/_project.pyx b/python/_project.pyx
index 34a7de8..efe66bd 100644
--- a/python/_project.pyx
+++ b/python/_project.pyx
@@ -1,12 +1,12 @@
 from cpython cimport bool
 from cython cimport view
 from cython.parallel import prange, parallel
-from openmp cimport omp_get_max_threads, omp_get_thread_num
 from libc.math cimport sin, cos, abs, floor, sqrt
 import numpy as np
 cimport numpy as npx
 cimport cython
 from copy cimport *
+from openmp cimport omp_get_max_threads, omp_get_thread_num
 
 ctypedef npx.float64_t DTYPE_t
 DTYPE=np.float64
@@ -298,8 +298,7 @@ cdef void INTERNAL_project_cic_no_mass(npx.ndarray[DTYPE_t, ndim=3] g,
     cdef double half_Box = 0.5*Lbox
     cdef double delta_Box = Ngrid/Lbox
     cdef int i
-    cdef double a[3]
-    cdef double c[3]
+    cdef double a[3], c[3]
     cdef int b[3]
     cdef int do_not_put
 
@@ -335,10 +334,8 @@ cdef void INTERNAL_project_cic_no_mass_periodic(npx.ndarray[DTYPE_t, ndim=3] g,
     cdef double half_Box = 0.5*Lbox
     cdef double delta_Box = Ngrid/Lbox
     cdef int i
-    cdef double a[3]
-    cdef double c[3]
-    cdef int b[3]
-    cdef int b1[3]
+    cdef double a[3], c[3]
+    cdef int b[3], b1[3]
     cdef int do_not_put
 
     for i in range(x.shape[0]):
@@ -376,8 +373,7 @@ cdef void INTERNAL_project_cic_with_mass(npx.ndarray[DTYPE_t, ndim=3] g,
     cdef double half_Box = 0.5*Lbox
     cdef double delta_Box = Ngrid/Lbox
     cdef int i
-    cdef double a[3]
-    cdef double c[3]
+    cdef double a[3], c[3]
     cdef DTYPE_t m0
     cdef int b[3]
 
@@ -414,10 +410,8 @@ cdef void INTERNAL_project_cic_with_mass_periodic(npx.ndarray[DTYPE_t, ndim=3] g
     cdef double half_Box = 0.5*Lbox, m0
     cdef double delta_Box = Ngrid/Lbox
     cdef int i
-    cdef double a[3]
-    cdef double c[3]
-    cdef int b[3]
-    cdef int b1[3]
+    cdef double a[3], c[3]
+    cdef int b[3], b1[3]
 
     for i in range(x.shape[0]):
 
@@ -538,11 +532,10 @@ cdef DTYPE_t cube_integral(DTYPE_t u[3], DTYPE_t u0[3], int r[1]) nogil:
 
 @cython.boundscheck(False)
 @cython.cdivision(True)
-cdef DTYPE_t cube_integral_trilin(DTYPE_t u[3], DTYPE_t u0[3], int r[1], DTYPE_t vertex_value[8], int err[1]) nogil:
+cdef DTYPE_t cube_integral_trilin(DTYPE_t u[3], DTYPE_t u0[3], int r[1], DTYPE_t vertex_value[8]) nogil:
     cdef DTYPE_t alpha_max
     cdef DTYPE_t I, tmp_a
-    cdef DTYPE_t v[3]
-    cdef DTYPE_t term[4]
+    cdef DTYPE_t v[3], term[4]
     cdef int i, j, q
 
     alpha_max = 10.0 # A big number
@@ -560,13 +553,7 @@ cdef DTYPE_t cube_integral_trilin(DTYPE_t u[3], DTYPE_t u0[3], int r[1], DTYPE_t
         if tmp_a < alpha_max:
             alpha_max = tmp_a
             j = i
-
-#    if (u0[i] < 0 or u0[i] > 1):
-#      err[0] = 1
-#      with gil:
-#        print("Bouh! u0[%d] = %lg" % (i, u0[i]))
-#      return 0
-
+            
     I = compute_projection(vertex_value, u, u0, alpha_max)
     
     for i in xrange(3):
@@ -580,7 +567,7 @@ cdef DTYPE_t cube_integral_trilin(DTYPE_t u[3], DTYPE_t u0[3], int r[1], DTYPE_t
 
 @cython.boundscheck(False)
 cdef DTYPE_t integrator0(DTYPE_t[:,:,:] density,
-                         DTYPE_t u[3], DTYPE_t u0[3], int u_delta[3], int iu0[3], int jumper[1], int err[1]) nogil except? 0:
+                         DTYPE_t u[3], DTYPE_t u0[3], int u_delta[3], int iu0[3], int jumper[1]) nogil:
     cdef DTYPE_t d
     
     d = density[iu0[0], iu0[1], iu0[2]]
@@ -589,20 +576,15 @@ cdef DTYPE_t integrator0(DTYPE_t[:,:,:] density,
 
 @cython.boundscheck(False)
 cdef DTYPE_t integrator1(DTYPE_t[:,:,:] density,
-                         DTYPE_t u[3], DTYPE_t u0[3], int u_delta[3], int iu0[3], int jumper[1], int err[1]) nogil except? 0:
+                         DTYPE_t u[3], DTYPE_t u0[3], int u_delta[3], int iu0[3], int jumper[1]) nogil:
     cdef DTYPE_t vertex_value[8]
     cdef DTYPE_t d
-    cdef int a[3][2]
-    cdef int i
+    cdef int a[3][2], i
     
     for i in xrange(3):
       a[i][0] = iu0[i]
       a[i][1] = iu0[i]+1
-      
-      with gil:    
-        assert a[i][0] >= 0
-        assert a[i][1] < density.shape[i]
-    
+          
     vertex_value[0 + 2*0 + 4*0] = density[a[0][0], a[1][0], a[2][0]]
     vertex_value[1 + 2*0 + 4*0] = density[a[0][1], a[1][0], a[2][0]]
     vertex_value[0 + 2*1 + 4*0] = density[a[0][0], a[1][1], a[2][0]]
@@ -613,8 +595,7 @@ cdef DTYPE_t integrator1(DTYPE_t[:,:,:] density,
     vertex_value[0 + 2*1 + 4*1] = density[a[0][0], a[1][1], a[2][1]]
     vertex_value[1 + 2*1 + 4*1] = density[a[0][1], a[1][1], a[2][1]]
 
-#    return cube_integral(u, u0, jumper)*d
-    return cube_integral_trilin(u, u0, jumper, vertex_value, err)
+    return cube_integral_trilin(u, u0, jumper, vertex_value)
 
 
     
@@ -622,15 +603,11 @@ cdef DTYPE_t integrator1(DTYPE_t[:,:,:] density,
 cdef DTYPE_t C_line_of_sight_projection(DTYPE_t[:,:,:] density,
                              DTYPE_t a_u[3],
                              DTYPE_t min_distance,
-                             DTYPE_t max_distance, DTYPE_t[:] shifter, int integrator_id, int out_err[1]) nogil except? 0:
+                             DTYPE_t max_distance, DTYPE_t[:] shifter, int integrator_id) nogil except? 0:
 
-    cdef DTYPE_t u[3]
-    cdef DTYPE_t ifu0[3]
-    cdef DTYPE_t u0[3]
-    cdef DTYPE_t utot[3]
+    cdef DTYPE_t u[3], ifu0[3], u0[3], utot[3]
     cdef int u_delta[3]
     cdef int iu0[3]
-    cdef int err[1]
     cdef int i
     cdef int N = density.shape[0]
     cdef int half_N = density.shape[0]/2
@@ -639,10 +616,8 @@ cdef DTYPE_t C_line_of_sight_projection(DTYPE_t[:,:,:] density,
     cdef int jumper[1]
     
     cdef DTYPE_t (*integrator)(DTYPE_t[:,:,:],
-                               DTYPE_t u[3], DTYPE_t u0[3], int u_delta[3], int iu0[3], int jumper[1], int err[1]) nogil except? 0
+                               DTYPE_t u[3], DTYPE_t u0[3], int u_delta[3], int iu0[3], int jumper[1]) nogil
 
-    out_err[0] = 0
-    
     if integrator_id == 0:
       integrator = integrator0
     else:
@@ -655,19 +630,17 @@ cdef DTYPE_t C_line_of_sight_projection(DTYPE_t[:,:,:] density,
         u0[i] = a_u[i]*min_distance
         ifu0[i] = half_N+u0[i]+shifter[i]
         if (ifu0[i] <= 0 or ifu0[i] >= N):
-          with gil: 
-            print "BLABLA"
           return 0
         iu0[i] = int(floor(ifu0[i]))
         u0[i] = ifu0[i]-iu0[i]
         u_delta[i] = 1 if iu0[i] > 0 else -1
-#        if (not ((iu0[i]>= 0) and (iu0[i] < N))):
-#          out_err[0] = 1
-#          return 0
-
-#        if (not (u0[i]>=0 and u0[i]<=1)):
-#          out_err[0] = 1
-#          return 0
+        if (not ((iu0[i]>= 0) and (iu0[i] < N))):
+          with gil:
+            raise RuntimeError("iu0[%d] = %d !!" % (i,iu0[i]))
+            
+        if (not (u0[i]>=0 and u0[i]<=1)):
+          with gil:
+            raise RuntimeError("u0[%d] = %g !" % (i,u0[i]))
 
     completed = 0
     if ((iu0[0] >= N) or (iu0[0] <= 0) or
@@ -678,14 +651,8 @@ cdef DTYPE_t C_line_of_sight_projection(DTYPE_t[:,:,:] density,
     I0 = 0
     jumper[0] = 0
     while completed == 0:
-        err[0] = 0
-        I0 += integrator(density, u, u0, u_delta, iu0, jumper, err)
-
-#        if err[0] == 1:
-#          with gil:
-#            print("Bah! error!")
-#          out_err[0] = 1
-#          return 0
+        
+        I0 += integrator(density, u, u0, u_delta, iu0, jumper)
 
         if u[jumper[0]] < 0:
             iu0[jumper[0]] -= 1
@@ -718,25 +685,19 @@ def line_of_sight_projection(DTYPE_t[:,:,:] density not None,
                              DTYPE_t min_distance,
                              DTYPE_t max_distance, DTYPE_t[:] shifter not None, int integrator_id=0):
   cdef DTYPE_t u[3]
-  cdef int out_err[1]
-  cdef DTYPE_t v
   
   u[0] = a_u[0]
   u[1] = a_u[1]
   u[2] = a_u[2]
   
-  out_err[0] = 0
-  v = C_line_of_sight_projection(density,
+  C_line_of_sight_projection(density,
                              u,
                              min_distance,
-                             max_distance, shifter, integrator_id, out_err)
-#  if out_err[0] == 1:
-#    raise RuntimeError("Error occured during integration")
-  return v
+                             max_distance, shifter, integrator_id)
 
 cdef double _spherical_projloop(double theta, double phi, DTYPE_t[:,:,:] density, 
                 double min_distance, double max_distance, 
-                DTYPE_t[:] shifter, int integrator_id, int out_err[1]) nogil:
+                DTYPE_t[:] shifter, int integrator_id) nogil:
   cdef DTYPE_t u0[3]
 
   stheta = sin(theta)
@@ -744,7 +705,7 @@ cdef double _spherical_projloop(double theta, double phi, DTYPE_t[:,:,:] density
   u0[1] = sin(phi)*stheta
   u0[2] = cos(theta)
  
-  return C_line_of_sight_projection(density, u0, min_distance, max_distance, shifter, integrator_id, out_err)
+  return C_line_of_sight_projection(density, u0, min_distance, max_distance, shifter, integrator_id)
 
 
 @cython.boundscheck(False)
@@ -761,9 +722,9 @@ def spherical_projection(int Nside,
     cdef DTYPE_t[:] outm
     cdef int[:] job_done
     cdef npx.ndarray[DTYPE_t, ndim=1] outm_array
-    cdef long N
+    cdef long N, N0
     cdef double stheta
-    cdef int out_err[1]
+    cdef int tid
     
     if shifter is None:
         shifter = view.array(shape=(3,), format=FORMAT_DTYPE, itemsize=sizeof(DTYPE_t))
@@ -777,21 +738,22 @@ def spherical_projection(int Nside,
       p = pb.ProgressBar(maxval=outm.size,widgets=[pb.Bar(), pb.ETA()]).start()
 
     N = omp_get_max_threads()
+    N0 = outm.size
+    
+    if booster < 0:
+      booster = 1000
+    
     job_done = view.array(shape=(N,), format="i", itemsize=sizeof(int))
     job_done[:] = 0
-    theta,phi = hp.pix2ang(Nside, np.arange(outm.size))
-
-    if booster <= 0:
-      booster = density.size / 100 / N
-
+    theta,phi = hp.pix2ang(Nside, np.arange(N0))
     with nogil, parallel():
-      for i in prange(N):
-          if omp_get_thread_num() == 0 and progress != 0 and (i%booster) == 0:
+      tid = omp_get_thread_num()
+      for i in prange(N0):
+          if progress != 0 and (i%booster) == 0:
             with gil:
               p.update(_mysum(job_done))
-#          out_err[0] = 0
-          outm[i] = _spherical_projloop(theta[i], phi[i], density_view, min_distance, max_distance, shifter, integrator_id, out_err)
-          job_done[omp_get_thread_num()] = i
+          outm[i] = _spherical_projloop(theta[i], phi[i], density_view, min_distance, max_distance, shifter, integrator_id)
+          job_done[tid] += 1
 
     if progress:
       p.finish()
diff --git a/python/project_tool.hpp b/python/project_tool.hpp
index 6f8c1d7..c185c44 100644
--- a/python/project_tool.hpp
+++ b/python/project_tool.hpp
@@ -5,14 +5,14 @@ template<typename T, typename ProdType>
 static T project_tool(T *vertex_value, T *u, T *u0)
 {
   T ret0 = 0;
-  for (int i = 0; i < 8; i++)
+  for (unsigned int i = 0; i < 8; i++)
     {
-      int c[3] = { i & 1, (i>>1)&1, (i>>2)&1 };
+      unsigned int c[3] = { i & 1, (i>>1)&1, (i>>2)&1 };
       int epsilon[3];
       T ret = 0;
       
       for (int q = 0; q < 3; q++)
-        epsilon[q] = (2*c[q]-1);
+        epsilon[q] = 2*c[q]-1;
 
       for (int q = 0; q < ProdType::numProducts; q++)
         ret += ProdType::product(u, u0, epsilon, q);
@@ -27,7 +27,8 @@ static T project_tool(T *vertex_value, T *u, T *u0)
 template<typename T>
 static inline T get_u0(const T& u0, int epsilon)
 {
-  return (epsilon > 0) ? u0 : (1-u0);
+  return (1-epsilon)/2 + epsilon*u0;
+//  return (epsilon > 0) ? u0 : (1-u0);
 }
 
 template<typename T>
@@ -39,7 +40,7 @@ struct ProductTerm0
   {
     T a = 1;
     
-    for (int r = 0; r < 3; r++)
+    for (unsigned int r = 0; r < 3; r++)
       a *= get_u0(u0[r], epsilon[r]);
     return a;
   }
@@ -54,14 +55,14 @@ struct ProductTerm1
   static T product(T *u, T *u0, int *epsilon, int q)
   {
     T a = 1;
-    double G[3];
+    T G[3];
     
-    for (int r = 0; r < 3; r++)
+    for (unsigned int r = 0; r < 3; r++)
       {
         G[r] = get_u0(u0[r], epsilon[r]);
       }
 
-    double F[3] = { G[1]*G[2], G[0]*G[2], G[0]*G[1] };
+    T F[3] = { G[1]*G[2], G[0]*G[2], G[0]*G[1] };
 
     return F[q] * u[q] * epsilon[q];
   }
@@ -75,14 +76,14 @@ struct ProductTerm2
   static inline T product(T *u, T *u0, int *epsilon, int q)
   {
     T a = 1;
-    double G[3];
+    T G[3];
     
-    for (int r = 0; r < 3; r++)
+    for (unsigned int r = 0; r < 3; r++)
       {
         G[r] = get_u0(u0[r], epsilon[r]);
       }
 
-    double F[3] = { epsilon[1]*epsilon[2]*u[1]*u[2], epsilon[0]*epsilon[2]*u[0]*u[2], epsilon[0]*epsilon[1]*u[0]*u[1] };    
+    T F[3] = { epsilon[1]*epsilon[2]*u[1]*u[2], epsilon[0]*epsilon[2]*u[0]*u[2], epsilon[0]*epsilon[1]*u[0]*u[1] };    
 
     return F[q] * G[q];
   }