openscad has a problem, I almost lost my work...

DESSINS-DXF-OPENSCAD/fixendstop.scad

@@ -1,11 +1,45 @@
+// Fixation
+color([0,0,1])
+difference() {
+    linear_extrude(height=10)
+    union() {
+        translate([9.5,1.7,0])
+        square([16.1,5.9]);
+        translate([13.1,-3.1])
+        square([8.7,7]);
+        translate([0,-3.1])
+        square([26.8,2.9]);
+    }
+    color([1,0,0])
+    translate([5,0,0])
+       union(){
+       //screw holes
+               translate([0 ,5 ,3.2])rotate([90,0,0]) cylinder(r=1.5,h=10,$fn=50);
+               translate([19,1 ,3.2])rotate([90,0,0]) cylinder(r=1.5,h=10,$fn=50);
+               translate([14.2 ,10,3.2])rotate([90,0,0]) cylinder(r=1.5,h=20,$fn=50);
+       }
+}
+
+/*
+// For testing / editing
+
 linear_extrude (height=2000)
-	  import (file="profil-axe.dxf", layer="0", $fn=50);
+                         import (file="../../reprapJeanneV2/DESSINS-DXF-OPENSCAD/profil-axe.dxf", layer="0", $fn=100);
 
-color([1,0,0])
-linear_extrude(height=5)
-difference() { union(){
-        translate([1.6,9.35,0]) square([6.1,16.3]);
-        translate([-5.4,13,0]) square([10,9]);
-    }
-    color([0,1,0]) translate([-15,15]) square([15,5]);
-}
+
+color([1,0,0]) translate([26.8,-5,0]) rotate(180) difference(){
+       union(){
+               linear_extrude(6.4)
+                       import (file="../../reprapJeanne/DXF-SCAD-AND-OTHERS/optical-end-stop.dxf", layer="fourche", $fn=100);
+               translate([0,0,-1.8]) linear_extrude(10)
+                       import (file="../../reprapJeanne/DXF-SCAD-AND-OTHERS/optical-end-stop.dxf", layer="PCB", $fn=100);
+       }
+       union(){
+       //screw holes
+               translate([2.8,5,3.2])rotate([90,0,0]) cylinder(r=1.5,h=10,$fn=50);
+               translate([21.8,5,3.2])rotate([90,0,0]) cylinder(r=1.5,h=10,$fn=50);
+       }
+
+}
+
+*/