Operation is not valid due to the current state of the object

Environment : Windows OS 2012 R2
Java : 1.7 / 1.8 64 bit JRE

When try to convert MSG (attached sample msg file) to EML, below exception appear :-

Exception in thread "main" class com.aspose.email.system.exceptions.InvalidOpera
tionException: Operation is not valid due to the current state of the object.
com.aspose.email.system.collections.SortedList.a(Unknown Source)
com.aspose.email.system.collections.SortedList.addItem(Unknown Source)
com.aspose.email.aeu.a(SourceFile:52)
com.aspose.email.pu.c(SourceFile:456)
com.aspose.email.pu.a(SourceFile:108)
com.aspose.email.pu.(SourceFile:69)
com.aspose.email.MapiMessageReader.(SourceFile:66)
com.aspose.email.MailMessage.a(SourceFile:1667)
com.aspose.email.MailMessage.b(SourceFile:1533)
com.aspose.email.MailMessage.a(SourceFile:1333)
com.aspose.email.MailMessage.load(SourceFile:1318)
com.convert.MsgToEmlConvert.Convert(MsgToEmlConvert.java:19)
com.convert.AsposeConvert.main(AsposeConvert.java:67)
at com.aspose.email.system.collections.SortedList.a(Unknown Source)
at com.aspose.email.system.collections.SortedList.addItem(Unknown Source
)
at com.aspose.email.aeu.a(SourceFile:52)
at com.aspose.email.pu.c(SourceFile:456)
at com.aspose.email.pu.a(SourceFile:108)
at com.aspose.email.pu.(SourceFile:69)
at com.aspose.email.MapiMessageReader.(SourceFile:66)
at com.aspose.email.MailMessage.a(SourceFile:1667)
at com.aspose.email.MailMessage.b(SourceFile:1533)
at com.aspose.email.MailMessage.a(SourceFile:1333)
at com.aspose.email.MailMessage.load(SourceFile:1318)
at com.convert.MsgToEmlConvert.Convert(MsgToEmlConvert.java:19)
at com.convert.AsposeConvert.main(AsposeConvert.java:67)