In the HFS3 being developed, there are no problems with opening. This version has an Open menu
If it works when using HFS3, then we could make it work with HFS2.
Your last message reminded me a very important step that I've forgotten.
Please try this:
1) In HFS press F5 to switch to expert mode (if you are not already using it).
2) Go to:
Menu >
Other options >
Open directly in browser...It opens a window, showing this list:
*.htm;*.html;*.jpg;*.jpeg;*.gif;*.png;*.txt;*.swf;*.svg
Now,
add to the end of that list the following:
;*.pdf;*.doc;*.docx;*.xls;*.xlsx;*.ppt;*.pptx
Or replace all the text with this:
*.htm;*.html;*.jpg;*.jpeg;*.gif;*.png;*.txt;*.swf;*.svg;*.pdf;*.doc;*.docx;*.xls;*.xlsx;*.ppt;*.pptx
Please report if that solves your issue or not.
(and sorry for my forgetfulness)