I have a part with a projected geometry of another parts. I run with this parts (FU1.ipt) since a week whitout problem. Today, after I have make a mirror ass'y (whitout FU1.ipt), I have a cross part association fail on 2 projected face... I redefine de geometry in the sketch and all are OK. Click on finish edit to return in the ass'y.. and another the same error message for the same geometry... This is the third time I redefine it and always the same thing...... I can't understand why !!!?? I have INV 8 SP1