Yea I know it does that, since I found someone that might have somewhat the same thing, our system, plotter, jet direct settings must be wrong. Our Plotter has 160mb ram but we can only send one plot at a time without getting an error. When we do send more than one an error come up saying it didn't print but once the current plot finishes, the next one start right up. My problem is the error problem, which really isn't an error. Is there somewhere in jet direct that I can change some setting to make it feed the plt files into the plotter instead of making them leave the plt files on my computer. I know that was a long explanation, I hope it wasn't to confusing and you are able to follow.
I ramble sometimes
