Hello Brian, I think this represents some un-implemented functionality. There are comments in SupBookRecord around line 196: http://svn.apache.org/viewvc/poi/trunk/src/java/org/apache/poi/hssf/record/SupBookRecord.java?view=annotate
The file-name of the external workbook is not encoded literally. There are special tokens denoting the volume root and other special directories. POI currently assumes there will only be one special token (in char 0) and just ignores it. It may take some time to figure out all potential encodings. Patches are welcome. regards, Josh
