Baking rigid body cache warning

[jason-howey]

hello,
I've been having a problem when i go to bake out my cached rigid body dynamic simulation. I get a warning that says:
// Warning: The rigid body is currently cached. Changing an attribute will have no affect. //
// Warning: until the cache is manually deleted via the Solvers->Memory Caching->Delete menu. //

Whenever I get this warning the baking procedure takes about 4 hours instead of the normal 1 or 2 minutes it usually takes to bake. I don't always get this warning, it seems like somehow the file gets corrupted and then gives the warning. The only way I've been able to get rid of this problem was by saving my scene file somewhere other than my project and then copying the file back into the project folder. but this could have just been luck. Any help would be very appreciated.
Jason

[morourke]

have you deleted the old cache before attempting to make a new one?

[jason-howey]

yeah, I deleted the old. I was trying all day yesterday to get it to go away, the only thing that worked was doing an export selection on the collision objects I was currently working on after I had done an optimize scene and a delete all by type for rigid bodies, constraints, and history. that got rid of the problem for about 4 hours of work but now its back again. I've also had an error that has been popping up every once and a while that I'm not sure if it's related or not, it's: // Error: basellist::take: cannot locate item // I have no idea what it's referring to. Thanks in advance.
Jason