openIV error

Time: "19:20:02"
Type: "EJclSimpleXMLError"
Message: "Invalid Document: Unexpected text in file prolog at position 1"

Additional information:
[Application Context]

[Application Windows]
TErrorWindow=OpenIV - Application error

  Release: 2.6.0.618 13.05.2015
  Address: "0x0086448A"
  Procedure: "JclSimpleXml.TJclSimpleXMLElemsProlog.Error"
  Unit: "System.Generics.Collections.pas", Line: "729"

Stack:
[00864485] JclSimpleXml.TJclSimpleXMLElemsProlog.Error (Line 729, "System.Generics.Collections.pas" + 0) + $CC40
[008644BD] JclSimpleXml.TJclSimpleXMLElemsProlog.FmtError (Line 729, "System.Generics.Collections.pas" + 0) + $CC78
[00863D57] JclSimpleXml.TJclSimpleXMLElemsProlog.LoadFromStringStream (Line 729, "System.Generics.Collections.pas" + 0) + $C512
[0085E03B] JclSimpleXml.TJclSimpleXML.LoadFromStringStream (Line 729, "System.Generics.Collections.pas" + 0) + $67F6
[0085DF59] JclSimpleXml.TJclSimpleXML.LoadFromStream (Line 729, "System.Generics.Collections.pas" + 0) + $6714
[00864E96] ExSimpleXMLUnit.TExSimpleXML.LoadXMLFile (Line 154, "ExSimpleXMLUnit.pas" + 15) + $9
[00A59EDD] Black.Core2.Config.TXMLConfig.LoadXML (Line 461, "Black.Core2.Config.pas" + 15) + $17
[00A55DCA] Black.Core2.Config.TXMLConfig.LoadApplicationConfig (Line 146, "Black.Core2.Config.pas" + 3) + $2
[00C61F72] Black.Core2.TCustomCore.LoadConfig (Line 310, "Black.Core2.pas" + 1) + $3
[00DEE954] Black.Application.CBlackApplication.Main (Line 117, "Black.Application.pas" + 23) + $17
[01339C7E] OpenIV.OpenIV (Line 580, "System.Generics.Collections.pas" + 11) + $5
[75A13368] BaseThreadInitThunk + $10
[77E192B0] Unknown function at RtlInitializeExceptionChain + $61
[77E19280] Unknown function at RtlInitializeExceptionChain + $31