[I can't join any servers]

I tried that and it didn't work

[I can't join any servers]

I have just started to use voltz and it won't let me join servers. It keeps saying to update the mods and I don't know how. Please help

[Voltz won't launch]

Launcher Version: Voltz

Operating System: Mac

Java Version: Java 7

Antivirus Program: idk

Description of Problem:

Voltz is downloading onto my computer, but every time I try to start voltz it says this "Minecraft failed to start, errors reported in the log."

Error Messages:

"Minecraft failed to start, errors reported in the log."

Error Log:

can't find it