Programm to test DXL-Files

Hi!

Gave it some Programm to controll an DXL-File, if it is correct to import in Notes?

I have some DXL-Files, they cannot import!

But my Internet Explorer show this Files correktly.

I don´t know where the error is.

And so I hope there is an Programm, how can help me!

Thanks for your help.