OK, I'm pretty sure that the output of amule --version will tell you that you're still using aMule 2.1.3.
Try to execute /usr/local/bin/amule -iwouldmarrymymule in order to start the real aMule CVS.
What happend? (probably...) you've two amule-executables: one located in /usr/bin (aMule 2.1.3) and another in /usr/local/bin (aMule CVS). When you type amule the system will execute the one in /usr/bin, which is aMule 2.1.3 without support for files >4GB.