diff --git a/src/Orbit-wise.jl b/src/Orbit-wise.jl
index cfbe766..91b83a7 100644
--- a/src/Orbit-wise.jl
+++ b/src/Orbit-wise.jl
@@ -127,24 +127,30 @@ function constrLHS(m::JuMP.Model, cnstr, Us, Ust, dims, vars, eps=100*eps(1.0))
    return @expression(m, sum(vecdot(M[π], vars[π]) for π in 1:endof(Us)))
 end
 
-function addconstraints!(m::JuMP.Model, data::OrbitData, l::Int=length(data.laplacian); var::Symbol = :λ)
-    λ = m[var]
-    Ust = [U' for U in data.Us]
-    for t in 1:l
-      #   lhs = constrLHS(m, data, t)
-         lhs = constrLHS(m, data.cnstr[t], data.Us, Ust, data.dims, data.Ps)
+function addconstraints!(m::JuMP.Model, data::OrbitData, l::Int=length(data.laplacian); var::Symbol=:λ)
+   λ = m[var]
+   Ust = [U' for U in data.Us]
+   idx = [π for π in 1:endof(data.Us) if size(data.Us[π],2) != 0]
 
-        d, d² = data.laplacian[t], data.laplacianSq[t]
-        if lhs == zero(lhs)
-            if d == 0 && d² == 0
-                info("Detected empty constraint")
-                continue
-            else
-                warn("Adding unsatisfiable constraint!")
-            end
-        end
-        JuMP.@constraint(m, lhs == d² - λ*d)
-    end
+   for t in 1:l
+      if t % 100 == 0
+         print(t, ", ")
+      end
+   #   lhs = constrLHS(m, data, t)
+      lhs = constrLHS(m, data.cnstr[t], data.Us[idx], Ust[idx], data.dims[idx], data.Ps[idx])
+
+      d, d² = data.laplacian[t], data.laplacianSq[t]
+      # if lhs == zero(lhs)
+      #    if d == 0 && d² == 0
+      #        info("Detected empty constraint")
+      #        continue
+      #    else
+      #        warn("Adding unsatisfiable constraint!")
+      #    end
+      # end
+      JuMP.@constraint(m, lhs == d² - λ*d)
+   end
+   println("")
 end
 
 function init_model(Uπs)