I'm working in an assembly and made a new sketch so for ref. to work out another portion of the design, however when I exit the sketch I can no longer see it. It vanishes! Anyone had this happen before? I'm using SW2007 SP4.0 and have never seen this before. I've told it to hide/show; suppress/unsuppressed; restarted the program; made it a block and re-inserted and nothing works. Thanks, Joseph