Changing Dimensions and Annoying Warning

[Anonymous]

I am trying to fix a design I created. I keep seeing a bright yellow rectangle on the timeline below. When I right-click, it says something like "review warning." I click it, and it says, "The project source is lost! Cache is used." I have no idea what this means or how to get rid of it. Ideas?

Another problem: changing dimensions. I made a perpendicular hole 0.375" from the base of the design. Now I want it 0.313" from the base. When I go into sketch and use the dimension tool, it tells me the design is over-constrainted and refuses to change the dimension. I saw an instruction saying to double-click the dimension to change it, but nothing happens when I do that. How do I fix this?

I tried to use the "modify parameters" tool. The dimension is listed as d96, but the list only goes up to d93. There is no d96 anywhere on the list.

[Anonymous]

Without knowing the model, I would say that the sketch with the yellow warning contained a projected edge from your models geometry that has since changed by altering a feature or dimension that came before the sketch in the timeline. If you go into the Review Warnings dialoge box you can usually get a good idea of what has gone missing.

For example, below I have extruded a cylinder onto a cube, and then made a sketch on the end of a cylinder of a square that was then cut through the entire object.

I then deleted the Extrude feature that came before the Sketch, and if you review the warning, it says the same 'Project source is lost! Cache is used." and in red it highlight the circle of the face of the cylinder that was projected into the sketch plane. 

To fix it, you could roll back the timeline to the point before the sketch creation, and establish a new plane for the sketch to be on. Then roll the timeline to after the sketch, right click on the sketch, and choose 'Redefine Sketch Plane' and choose the new plane just created.

Regarding the dimension, it is odd that you would not be able to change it by double clicking the dimension itself. Only thing I can think of is it is set to 'Driven'. If so it would apear in brackets and a slightly different colour to other dimensions. You could try deleting it and re-dimensioning. If you could post a screenshot that might help identify the issue better.

Hope that help. let me know if you are still having issues with this.

Niels

[Anonymous]

I had the same thing.  

I had three empty sketches before my first body.  

I erased the two unused sketches and got an error on the remaining sketch that said Project source is lost yadda yadda  yadda...

After reading the above post I right clicked the sketch and clicked redefine sketch plane.

Sure enough there was no plane defined for the sketch, so I selected the XY plane and the yellow disappeared.

I had built the third sketch on an existing sketch I guess and when I deleted the first two sketches I ignored the warning about deleting some dependencies.

It's too bad the errors aren't more explicit.

John

[Anonymous]

Boy am I glad I found this.  Was about to pull my hair out because of a missing plane.  Thanks.

[Anonymous]

Helped me, thanks for the explanation

[Anonymous]

+1. Surprising that the warning doesn't point you to the sketch plane though... I was looking through my sketches (and admittedly got tunnel vision) but I had some referenced geometry that I thought might have been causing problems.