Hello, John.
In which assembly are you trying to view the track? I suspect you may be trying to view it on Drosophila melanogaster. We recently released the dm6 assembly and updated the default Drosophila melanogaster assembly to dm6. The BAC End Pairs track is only available on the dm3 Browser and because dm6 is now the default, you may be viewing dm6 and not seeing the track.
Please contact us again at gen...@soe.ucsc.edu if you have any further questions. Questions sent to that address will be archived in a publicly-accessible forum for the benefit of other users. If your question contains sensitive data, you may send it instead to genom...@soe.ucsc.edu.
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Steve Heitner
UCSC Genome Bioinformatics Group
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Hello, John.
We do have a version of the BAC End Pairs track for mm10 on our test server at http://genome-test.cse.ucsc.edu/. As a test server, any information contained on it is still under development and could change at any time. We have no time estimate of when this track might be released to the public server.
Questions sent to that address will be archived in a publicly-accessible forum for the benefit of other users. If your question contains sensitive data, you may send it instead to genom...@soe.ucsc.edu.