Backtester broken after upgrade?

["Ed Cottrell" <emc@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>]

Hi,
 
I upgraded from 4.7 to 4.8 on June 1. I didn't try to use the backtester
again until today. Now, no matter what dates I enter in the backtester, it
only finds trades on or after June 1.
 
Anybody have any ideas how to fix this?
 
Best,
Ed