Hi
I had a problem with unicode chars in pdf, mine was æøå ÆØÅ the danish chars...
It turned out, that the standard fonts in pdf didn't write them... So, I downloaded the FreeSans, FreeSerif and FreeMono fonts from the internet, loaded them in my pdf and Vupti, it worked
I'm using FPPdf package btw.
Hth - Regards
Benny