I had created a custom navigation list in GP2010 using SmartList builder, and the list was working great. Then over the weekend, the list just suddenly stopped populating any data whatsoever.
To troubleshoot, I have re-built the list step-by-step, and have discovered that the list stops working when I join two specific tables. If I build a list based on each individual table, I have no trouble populating data, but as soon as I join the tables (using a left join), nothing shows up. The linked fields are both strings, and I have used the same link to customize a report in the report modifier, and this is still working fine.
It seems especially strange that the list WAS populating, and now has stopped. This made me believe that there is an issue with the data, but on examining the tables individually, I can find no problems with the data itself.
Any ideas where I should look next to fix my list?