No data is available for encoding 55636

Nov 7, 2009 at 8:12 AM
Edited Nov 7, 2009 at 8:16 AM

Passing my file into the binaryreader gives me the error:

{"No data is available for encoding 55636."}

at System.Text.Encoding.GetEncodingRare(Int32 codepage)
   at System.Text.Encoding.GetEncoding(Int32 codepage)
   at Excel.ExcelBinaryReader.readWorkBookGlobals()
   at Excel.ExcelBinaryReader.Initialize(Stream fileStream)
   at Excel.ExcelReaderFactory.CreateBinaryReader(Stream fileStream)

I can't find any reference to this error / code anywhere. Ideas? This is a real block for me.