hi im new to lyx and i'm trying to write an essay. im pretty satsfied but now an error occured. the preview is not working anymore. none of it. i get an error that means "error with the preview of pdf2". i tried other formats but none of it is working. i'm pretty desperate and hope one of you could help me. i don't know if it is of any importance, but i installed versions (svn) before. thank you!