How do I upgrade my project to 1.4 and get facebook login working?

Facebook login stopped working and it looked like there was a new package in 1.4 that solved this, so I tried upgrading to 1.4 but it failed. I then uninstalled 1.3.1 and installed 1.4 and that worked, but now my old 1.3.1 project doesn’t build anymore (error says it can’t find metadata file for meteor-tool 1.3.1). How do I upgrade the project?

Anyone? When I try to build my old (1.3.1) project I just get this error…

C:\Users\Marc\Documents\meteor\rball>meteor build
throw error;

Error: No metadata files found for isopack at: /C/Users/Marc/AppData/Local/.mete