Where did the pileup/SNP track go with my BAM file?

Full question: 
I wonder how I can display the pileup/SNP track. In an older version of GenomeView that I was using, when I was loading a BAMfile with short reads I was getting a SNP track but not anymore.
Answer: 

In a recent version of GenomeView (1255+) we had to split the functionality of the pileup/SNP track and the short read track which shows the individual reads.

Essentially, the pileup was calculated in real-time, but this proved to be impractical for very large data sets. Therefore we now support the pile-up format from samtools, which has the pile-up and SNP functionality.

The pile-up track is described GUI section in the manual.

Details on how to prepare your data can found in the data preparation section of the manual.