Tob3z
It could be when you download the Headers that they go all over the place like in picture 1
Picture 1
Click on the SUBJECT (marked in RED) and they should all go in order like picture 2
Picture 2
Now look at the files.
If you download the NZB file you can then load it into your newsreader and all the files will be put there for you.
Otherwise count the RAR files and if you look you can see that RAR 28 is smaller than the other 27. This is normally a giveaway that all the files are there because the last one is always smaller. Count them up and make sure all 28 are there and download.
Now lets imagine RAR 15 is missing.
Download the PAR2 file at the top and download.
Also download Quickpar and install.
http://www.quickpar.org.uk/Download.htm
Double click the PAR2 file and you will see this -
Picture 3
You can see that the RAR 15 is missing and Quickpar is telling you that 4 blocks are needed.
Downloading the first 3 PAR files now makes this magic happen -
Picture 4