When attempting to publish a presentation document to SmartCloud Meetings you receive the error
Error: Document conversion error. Please contact customer support. (5001)
and are unable to publish the document to the meeting.
In one case the file was a Microsoft .pptx file.
The problem was that the first slide in the file is labeled as slide #6.
The first slide must be labeled slide #1 in order to publish the document.
Make sure that any presentation document you attempt to publish starts with slide #1.
Another issue might be the file is too large or too complex and therefore the conversion times out.