Suddenly-missimg dependency

I had to an extended database repair last night, and this morning noticed that some of lilb's CN hoppers were coming up with a defective dependency. Turns out that the 55-ton mesh library was missing main.im. So I deleted the cdp for the mesh re-downloaded all of the 55 ton hoppers from the JR site and reinstalled. But the hopper mesh library doesn't seem to be anywhere in there. The kuid in question is 103012:100313:1.

Anybody know where I can find it?

Thanks.