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I'm trying to get a vulnerable practice ASP.NET web application (WebGoat.NET) installed on Apache Mono on Ubuntu. I've followed this guide and it all went smoothly; however, whenever I try to run the app I get this error:

The type or namespace name `log4net' could not be found. Are you missing a using directive or an assembly reference?

Log4net.dll is in the lib folder of the application directory. It's also in the /usr/lib/mono/gac directory. I'm not sure where else it needs to be. Any suggestions? Thanks!

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Put in the bin/ folder of your web application?

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