I have recently installed Truecrypt on Ubuntu 11.10. The first thing I wanted to do was open the User's Guide from the Help menu. However, when I clicked that menu entry, the GIMP image editor started opening and presented a dialogue to import/raster the PDF document.
I first checked the mimeapps.list file in ~/.local/share/applications to check that PDF files were set to open in evince document viewer by default - they were. I solved my problem by using the locate command in the terminal to find the source file at
/usr/share/truecrypt/doc/TrueCrypt User Guide.pdf and open it directly from there.
However, I would like to be able to open the User's Guide when needed easily from the Help menu rather than using this inconvenient work-around. Any suggestions?