Bertje, if below solves the problem for your Windows apps then what is your DOS program doing to re-create it? What is the DOS program and how does it interact with the printing environment?
Here is also a MS link related to your problem:
"Spooler Subsystem Application Needs to Close" and "Operation Could Not Be Completed - MSKB#
324757 >
>....opening the regestry and deleting the printer installation and rebooting solves the problem.... for my windows appi's.... when i try to print in dos then the error comes back and well i have to start all over again...
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In the End, we will remember not the words of our enemies, but the silence of our friends - Martin Luther King, Jr.