Yes, now that I see it I remember reading about it in the docs (sorry ).
I ran Dependency Walker on my executable, and trusted that it would report all necessary dll's however it can't pick this one up since it's not actually opening the database...

After putting qsqlite4.dll in the sqldrivers directory... (and also moving my database to the directory) it works perfectly!

Thanks for your help.
/ Ingemar