WinExtract error when dumping strings.txt

[xcrafter40]

Every time I try to dump strings.txt, it opens a window, and after a while it gives the error:

Unhandled Exception: System.ArgumentException: '.', hexadecimal value 0x00, is an invalid character.
at System.Xml.XmlEncodedRawTextWriter.InvalidXmlChar(Int32 ch, Char* pDst, Boolean entitize)
at System.Xml.XmlEncodedRawTextWriter.WriteElementTextBlock(Char* pSrc, Char* pSrcEnd)
at System.Xml.XmlEncodedRawTextWriter.WriteString(String text)
at System.Xml.XmlEncodedRawTextWriterIndent.WriteString(String text)
at System.Xml.XmlWellFormedWriter.WriteString(String text)
at System.Xml.Linq.ElementWriter.WriteElement(XElement e)
at System.Xml.Linq.XElement.WriteTo(XmlWriter writer)
at System.Xml.Linq.XContainer.WriteContentTo(XmlWriter writer)
at System.Xml.Linq.XNode.GetXmlString(SaveOptions o)
at System.Xml.Linq.XNode.ToString()
at WinExtract.Program.collectFonts(String input_folder)
at WinExtract.Program.Main(String[] args)

This is the rest of the output:
Chunk FORM offset:8 size:62921970
Chunk GEN8 offset:16 size:1476
Chunk OPTN offset:1500 size:80
Chunk LANG offset:1588 size:12
Chunk EXTN offset:1608 size:4
Chunk SOND offset:1620 size:17724
Chunk AGRP offset:19352 size:4
Chunk SPRT offset:19364 size:1976504
Chunk BGND offset:1995876 size:5980
Chunk PATH offset:2001864 size:3604
Chunk SCPT offset:2005476 size:2860
Chunk GLOB offset:2008344 size:4
Chunk SHDR offset:2008356 size:4
Chunk FONT offset:2008368 size:149296
Chunk TMLN offset:2157672 size:4
Chunk OBJT offset:2157684 size:748612
Chunk ROOM offset:2906304 size:4506968
Chunk DAFL offset:7413280 size:0
Chunk TPAG offset:7413288 size:170304
Chunk CODE offset:7583600 size:5258668
Chunk VARI offset:12842276 size:217992
Chunk FUNC offset:13060276 size:110492
Chunk STRG offset:13170776 size:2857384

And then the error right here