Error opening tif file with Hyperlink

I need to open some files from Navision

I use the HYPERLINK statement as follows:

HYPERLINK('file://C:/mygiffile.gif');

No problem with pdf, gif, jpeg and others.

But when I try with tif files, as follows:

HYPERLINK('file://C:/mytiffile.tif');

I get the error:

"C/SIDE hyperlinking failed.
You tried to hyperlink to this target:
[url=file://C:/mytiffile.tif]file://C:/mytiffile.tif[/url]
Do you want to place the hyperlink target on the clipboard?"

I also need to open ".dwg" (autocad) files with a autocad viewer.

Thanks in advance.
Marco Morreale