Printer function address error

I put up a new NT file and print server. I setup a printer to share out to our Domain users. I added this network printer to a Windows 2000 and a NT 4.0 clients and it worked fine. I later changed the port on this network printer. Now the NT client has no problem using this network printer. My problem is the Windows 2000 client get’s a “Function address 0x7800167c caused a protection fault. (Exception code 0xc0000005) some or all property page(S) may not be displayed” I logged in as a diff. user on this Windows 2000 client and added the network printer and it works fine. The problem is only on this Windows 2000 computer using the same client login name which is is the owner of this Windows 2000 computer