Shell integration removal problem

Hi, I'm having a problem removing shell-integration for .jpg files. That is the context menu item called "Create PDF and Bitmap Files with PDFCreator".

I've tried to remove shell integration from the general settings 2 and as administrator. And it seems to work for other file types, but not jpg (or jpeg for that matter).

I suspect it might be a leftover from an older version of PDFCreator.

What should I search for in regedit, to find and remove relevant keys? Specific places to look could also be helpful.

[edit: using latest version of pdfcreator - 1.6.2, reinstall tried]

Best regards,