Mono does not appear to be installed error (winetricks) even though it is installed

I am trying to install dotnet4.5 using winetricks on 64 bit Ubuntu12.04. It keeps giving me the error "Mono not installed" even though mono is installed. I ran these two commands to get mono and mono full

sudo apt-get mono-vbnc
sudo apt-get mono-complete

      

        
        
        
      

    

I am using Wine version - 1.6. I already tried to reinstall it. It's not just dotnet4.5, but all dotnet versions give the same error.

I've already tried asking the Ubuntu forums to no avail.