Error al cancelar: <ERROR>Error WE:System.IO.FileNotFoundException: Could not find file 'c:\sellosclientes\laum530330dr4\landa uribe medardo.cer.pem'.
File name: 'c:\sellosclientes\laum530330dr4\landa uribe medardo.cer.pem'
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.StreamReader..ctor(String path, Encoding encoding, Boolean detectEncodingFromByteOrderMarks, Int32 bufferSize, Boolean checkHost)
at System.IO.File.InternalReadAllText(String path, Encoding encoding, Boolean checkHost)
at CancelacionCFDI.wsCancelaCFDI.cancelaCFDI40(String RFCEmisor, String RFCReceptor, String UUID, Decimal Total, String Motivo, String FolioSustitucion) in C:\DesarrolloFE\CFDI40\TimbradoCFDI40\CancelacionCFDI\wsCancelaCFDI.asmx.vb:line 183</ERROR>
Solucion: se cargo el certificado de nuevo en el portal Nota sin espacios.