problem saving WORD document
My MAC Mini, OSX 10.9.3, Processor speed 2.5 GHz, Memory 4 GB; storage says 363.04 GB free out of 499.25 GB.
I've been working for hours on a report for work, a WORD doc with graphs, and analysis. Now I keep getting a window saying "The disk is full trying to write to "Macintosh HD" Free some space on this drive, or save the doc on another disk. Try one or more of the following: Close any unneeded documents, programs, and windows or Save the document on another disk." Behind that is another window: "Word is unable to save the AutoRecover file in the location you have specified. Make sure that you have specified a valid location for AutoRecover files in Preferences, and that you have permission to write files to the location you specified."
I closed everything but the doc; still no change. I opened Preferences and cannot find anything related to AutoRecover files. I plugged in several flash drives and got the same message; finally plugged in a new 4 GB Kingston Data Traveler Locker; Same message comes up. I can't leave it because apparently all the work is not actually saved anywhere! The last effective save was apparently hours ago. Yet my completed doc sits open on my desktop. Help if you can. How can I save the document to a disk -- any disk?
Mac mini, OS X Mountain Lion (10.8.3), MacBook 2008 on same TimeMachine