Null Context Error

We recieve the following error when we try plotting some certain drawings:

Null context handle is passed from client to host during a remote procedure call.

We are using a OCE' TDS-300 and are on windows 2000 OS. and Autocad 2004...

We tried installing some service packs and the problem stopped momentarily then came back? This error happens on both work stations in our office? but not on the same drawings?

It's very odd and dosen't make any sense to us here... Please advise...

 

Now to add to are woe's- ths error happens when plotting from paper space. When we try to plot from moel space, we get an error that reads:
Y axis is unitles, Normalize

I have neer heard of these errors or have any idea on a solution...

Autodesk???

 

This is ridiculous... We can now no longer plot any file to the plotter due to the same null context error? And only few drawings plot to the small size printer/copier?

Autodesk why is there NO information on this error

 

I had the same problem, when I wanted to plot all paper lists (It was 28 lists). That problem was out when I restarted my computer. I know, that this problem doesn't matter on drawing.