New Post: EOF In Header exception when reading .xlsm

I'm getting an EOF in Header exception when opening a XLSM file and initializing a XSSFWorkBook(Stream) object with the 2.0 beta version of NPOI. Below is a stack trace. Has anyone seen this before?

Stack trace:
at ICSharpCode.SharpZipLib.Zip.Compression.Streams.InflaterInputBuffer.ReadLeByte()
at ICSharpCode.SharpZipLib.Zip.Compression.Streams.InflaterInputBuffer.ReadLeShort()
at ICSharpCode.SharpZipLib.Zip.Compression.Streams.InflaterInputBuffer.ReadLeInt()
at ICSharpCode.SharpZipLib.Zip.ZipInputStream.GetNextEntry()
at NPOI.OpenXml4Net.Util.ZipInputStreamZipEntrySource..ctor(ZipInputStream inp)
at NPOI.OpenXml4Net.OPC.ZipPackage..ctor(Stream in1, PackageAccess access)
at NPOI.OpenXml4Net.OPC.OPCPackage.Open(Stream in1)
at NPOI.Util.PackageHelper.Open(Stream is1)
at NPOI.XSSF.UserModel.XSSFWorkbook..ctor(Stream is1)
at Magnolia.FileUtilities.ExcelWrapper.openWorkbook() in C:\Development\Magnolia\Magnolia\FileUtilities\ExcelWrapper.cs:line 109
at Magnolia.FileUtilities.ExcelWrapper..ctor(String pathAndFile) in C:\Development\Magnolia\Magnolia\FileUtilities\ExcelWrapper.cs:line 91
at DocumentManager.MBGFE.ImportVBT.importVBTFile(String pathAndFile) in C:\Documents and Settings\tclaaso\my documents\visual studio 2010\Projects\DocumentManager\DocumentManager\MBGFE\ImportVBT.aspx.cs:line 454
at DocumentManager.MBGFE.ImportVBT.onImportButtonClicked(Object sender, EventArgs e) in C:\Documents and Settings\tclaaso\my documents\visual studio 2010\Projects\DocumentManager\DocumentManager\MBGFE\ImportVBT.aspx.cs:line 486