General ⇒ TeXnic doesn't compile again

[karotte]

suddenly: (few minutes ago he finished compiling without complaining)

! Emergency stop.
<*> ...igene*Dateien/karotte/Prakt.tex

! ==> Fatal error occured, the output PDF file is not finished!
Transcript written on Prakt.log.

What has happened?
What con I do?
Help!

[karotte]

oh sorry for disturbing you

simply \end document was missing

everything's alright now!

[localghost]

Close the PDF viewer and try again. Very often this is the cause. I don't know, but that's it.

Edit: I should read more than the first post.