Icon of "pdfforge" disappeared!

Dear Friends,
May I ask why the icon of "pdfforge" disappeared when using IE recently.
No any other software/hardware has been installed/updated. Originally, I was using 1.2.0, now it is 1.2.2 after seeing the problem. After this update, still no change, (i.e. 1.2.0 or 1.2.2).
But the icon and software/program is still in my computer currently. Only I can't convert the web information to pdf file.
What can I do, PLEASE HELP!
Warmest Regards,
Chan Chan