log4net
To make log4net work with .NET Framework 4, see the following post - link.
In brief, here is the summary of things to do:
- Comment out
- // [assembly: System.Security.AllowPartiallyTrustedCallers]
- Add line
- [assembly: System.Security.SecurityRules(System.Security.SecurityRuleSet.Level1)]
This made it work for me.