Moved call to DeleteOldShowsByFeedL to when a feed is listed. This prevents a race condition which likely caused
<?xml version="1.0" standalone="yes"?>
<backup_registration>
<passive_backup>
<include_directory name = "\"/>
</passive_backup>
<public_backup>
</public_backup>
<system_backup/>
<restore requires_reboot = "no"/>
</backup_registration>