diff --git a/engine/engine.go b/engine/engine.go
index 1d0c9ae0a..d79281117 100644
--- a/engine/engine.go
+++ b/engine/engine.go
@@ -8,7 +8,7 @@ import (
 	"runtime"
 )
 
-const VERSION = "mumax3.0.11 α "
+const VERSION = "mumax3.1.0"
 
 var UNAME = VERSION + runtime.GOOS + "_" + runtime.GOARCH + " " + runtime.Version() + "(" + runtime.Compiler + ")"
 
@@ -115,13 +115,13 @@ func Close() {
 	Table.flush()
 
 	// debug. TODO: rm
-	for n, p := range params {
-		if u, ok := p.(interface {
-			nUpload() int
-		}); ok {
-			log.Println(n, "\t:\t", u.nUpload(), "uploads")
-		}
-	}
+	//	for n, p := range params {
+	//		if u, ok := p.(interface {
+	//			nUpload() int
+	//		}); ok {
+	//			log.Println(n, "\t:\t", u.nUpload(), "uploads")
+	//		}
+	//	}
 }
 
 //func sanitycheck() {
diff --git a/engine/exchange.go b/engine/exchange.go
index dba411b1f..c6e0f7b1a 100644
--- a/engine/exchange.go
+++ b/engine/exchange.go
@@ -6,7 +6,6 @@ import (
 	"github.com/mumax/3/cuda"
 	"github.com/mumax/3/data"
 	"github.com/mumax/3/util"
-	"log"
 	"math"
 	"unsafe"
 )
@@ -140,14 +139,14 @@ func (p *exchParam) upload() {
 	if p.gpu == nil {
 		p.gpu = cuda.SymmLUT(cuda.MemAlloc(int64(len(p.lut)) * cu.SIZEOF_FLOAT32))
 	}
-	log.Println("upload lex2:\n", p)
+	//log.Println("upload lex2:\n", p)
 	cu.MemcpyHtoD(cu.DevicePtr(p.gpu), unsafe.Pointer(&p.lut[0]), cu.SIZEOF_FLOAT32*int64(len(p.lut)))
 	p.gpu_ok = true
 }
 
 func (p *exchParam) SetInterRegion(r1, r2 int, val float64) {
 	v := float32(val)
-	log.Println("lex2.setinterregion", r1, r2, val)
+	//log.Println("lex2.setinterregion", r1, r2, val)
 	p.lut[symmidx(r1, r2)] = v
 
 	if r1 == r2 {
diff --git a/engine/scalarparam.go b/engine/scalarparam.go
index 472e3c683..5c09e2690 100644
--- a/engine/scalarparam.go
+++ b/engine/scalarparam.go
@@ -2,7 +2,6 @@ package engine
 
 import (
 	"github.com/mumax/3/script"
-	"log"
 	"reflect"
 )
 
@@ -25,7 +24,7 @@ func (p *ScalarParam) GetRegion(region int) float64 {
 }
 
 func (p *ScalarParam) SetValue(v interface{}) {
-	log.Println(p.Name(), ".SetValue", v)
+	//log.Println(p.Name(), ".SetValue", v)
 	f := v.(script.ScalarFunction)
 	if f.Const() {
 		p.setUniform([]float64{f.Float()})
diff --git a/engine/vectorparam.go b/engine/vectorparam.go
index a608813c3..15ad90bc3 100644
--- a/engine/vectorparam.go
+++ b/engine/vectorparam.go
@@ -2,7 +2,6 @@ package engine
 
 import (
 	"github.com/mumax/3/script"
-	"log"
 	"reflect"
 )
 
@@ -28,10 +27,10 @@ func (p *VectorParam) GetRegion(region int) [3]float64 {
 func (p *VectorParam) SetValue(v interface{}) {
 	f := v.(script.VectorFunction)
 	if f.Const() {
-		log.Println(p.Name(), "is constant")
+		//log.Println(p.Name(), "is constant")
 		p.setUniform(slice(f.Float3()))
 	} else {
-		log.Println(p.Name(), "not constant")
+		//log.Println(p.Name(), "not constant")
 		p.setFunc(0, NREGION, func() []float64 {
 			return slice(f.Float3())
 		})