Can't open pdf after download

When i download a pdf and i want to open it. I get the message the file exension is not supported or not correct coded?

can anyone help me?

You may create a test client and test quote/invoice and create a new PDF file. please upload the file here then.

Hi Kovah, thanks for your reply, i can’t upload a pdf here…
Can i email it to you?

Regards
Bart

Hi Kovah,

I figured it out.
When i want to use footers/headers the problem occurs.

If i leave this section everythings works fine:

<!–mpdf



Pagina {PAGENO}/{nb}



mpdf–>

2018-03-26%2011_05_23-Naamloos%20-%20Kladblok