Can you help me?

[MrWZZ]

00:00:04.737 [Thread-15] ERROR net.vhati.modmanager.core.ModPatchThread - Patching failed. java.nio.charset.UnmappableCharacterException: Input length = 1 at java.nio.charset.CoderResult.throwException(Unknown Source) at sun.nio.cs.StreamEncoder.implWrite(Unknown Source) at sun.nio.cs.StreamEncoder.write(Unknown Source) at java.io.OutputStreamWriter.write(Unknown Source) at net.vhati.modmanager.core.EOLWriter.write(EOLWriter.java:75) at net.vhati.modmanager.core.EOLWriter.write(EOLWriter.java:81) at java.io.Writer.write(Unknown Source) at org.jdom2.output.support.AbstractXMLOutputProcessor.write(AbstractXMLOutputProcessor.java:342) at org.jdom2.output.support.AbstractXMLOutputProcessor.printComment(AbstractXMLOutputProcessor.java:711) at org.jdom2.output.support.AbstractXMLOutputProcessor.printContent(AbstractXMLOutputProcessor.java:940) at net.vhati.modmanager.core.SloppyXMLOutputProcessor.printElement(SloppyXMLOutputProcessor.java:113) at org.jdom2.output.support.AbstractXMLOutputProcessor.printDocument(AbstractXMLOutputProcessor.java:533) at org.jdom2.output.support.AbstractXMLOutputProcessor.process(AbstractXMLOutputProcessor.java:191) at org.jdom2.output.XMLOutputter.output(XMLOutputter.java:822) at net.vhati.modmanager.core.SloppyXMLOutputProcessor.sloppyPrint(SloppyXMLOutputProcessor.java:165) at net.vhati.modmanager.core.ModUtilities.patchXMLFile(ModUtilities.java:257) at net.vhati.modmanager.core.ModPatchThread.patch(ModPatchThread.java:242) at net.vhati.modmanager.core.ModPatchThread.run(ModPatchThread.java:88)