....to borrow a phrase I read in Matt's site. Just ran into this one. I guess I'm hitting them all! What were they thinking? For me it's a matter of perceived value. The value of a work of engineering. Hours, days, weeks, months. Lots of time, money, thought, consideration and study goes into these works. Given that, the very tools with which we document and create these designs must not conspire against us. The unique ability that Toolbox has to damage a design if used as delivered is simply a failure by SW to place any value on their customers work. For this is the only way one could consider designing a system that would allow such a grotesque alteration of a design to take place. Design data integrity must be a fundamental guarantee of a high-end tool. The design must be a solid unit that can survive transport and archival without having to resort to error-prone manipulation. One such example is using the "copy" option in Toolbox; appending these files to any archive or transmission and later having to recreate a structure just to be able to see the design without missing parts or distortions. Not only is this a mess that is unreliable (it might not survive an employee leaving, for example) but it is prone to such basic issues such as file naming collisions and other tragedies one can think of. There are examples of this type of problem with other tools. One that comes to mind with ACAD is the image issue. ACAD saves absolute paths to images used in drawings. All you have to do to break such a drawing is move the directory from drive C to drive D. The only fix is to manually tell the program where the images are. Gotta love it! I'm adopting a tip I saw while searching the NG's archives for this problem: Insert all the Toolbox parts you need. Select a representative or each part type. Open it. Use "Save As" to save it to the design directory. Now it's a permanent part of that design. The whole directory could be zipped-up and moved to the other end of the planet with a reasonable guarantee that a 4-40 nut won't turn into one used to fasten tires on 747's. The good news is that you only have to do this once per part "family" due to configurations. -Martin