After adding SQL Server private sessions storage I get this error:
Synonym 'Applications' refers to an invalid object
Here is the relevant web.config section:
<sessionState mode="Custom" customProvider="mssql" cookieless="false" timeout="20">
<providers>
<add name="mssql" type=" Sitecore.SessionProvider.Sql.SqlSessionStateProvider, Sitecore.SessionProvider.Sql" connectionStringName="session" pollingInterval="2" compression="true" sessionType="private" />
</providers>
</sessionState>
UPDATE
After changing to using SQL Session as per Sitecore's Instructions, I received the error. The only difference between the site working and not working was the above config change. As soon as I made the change and loaded the site, I got the YSOD with the error.