Created Unassigned: "Magick: Postscript delegate failed `C:\\Header.pdf': No such file or directory @ error/pdf.c/ReadPDFImage/682"} [1189]

Hello,
I use the following code:
using (MagickImageCollection images = new MagickImageCollection())
{
images.Read(@"C:\Header.pdf");
}

But I get ever the exception "No such file or directory @ error/pdf.c/ReadPDFImage/682",
but the file exists.
Also Load from stream or load a byte array do not work.

I use the 32 Bit Library Magick.NET-x86.dll. Are there some problems?
Thank you for help.
Greetings