I can download a B and E file for a particular station, but cannot see these files in the processor after exiting the download sequence. The other five occupations show in download and process just fine. The same receiver was used at a second station afterwards and its data can bed downloaded and processed with the second receiver's data.

The station was coincidentally the first station of the day and by the way took over an hour to indicate a first timing interval (left green light).

Lee, try converting the b file to RINEX and looking at the file in wordpad. See if the first epoch and last epoch of data agree with the times in the header. Next see if the marker name in the header is a real Ashtech 4 character site name, or if it is ????. You may have a kinematic site name somehow inserted instead of your first occupation in the header...
Also look for the words "This is the start of a new site" or something similar. This will indicate when a new occupation is happening and may be a clue as to when Locus processor should be looking for a site name and time.....b

You have experienced a problem seen on occasion where one satellite in the data file has range errors causing the file to not load into the processing software. Email me the B and E file you are having problems with. I can fix the problem so that the files will load and process properly.

Bill Martin
Ashtech Precision Products