Do you get a useable pdf-file if you instead do an file->export->PDF(pdflatex) ?I've recently installed Lyx on Windows. I can view DVI files but not PDF files. The lyxrc file is set up correctly (meaning that all of the paths to Acrobat have been correclty specified), but when I try View>PDF(pdflatex), Acrobat says 'There was an error opening this document. The file does not exist'. Checking out the tmp directory shows that something is happening - some proto-pdf files have been created, but not a finalised one.
Also, try on a simple file with just a line or two of text. There may be some things that trips up pdflatex. This will show wether you have a pdflatex problem or merely a document using constructs that fail in pdflatex.
Helge Hafting
