HELP! ERROR WHEN LAUNCHING FTB UNLEASHED.

[HazyOG]

Hello, when i try to launch FTB unleashed, the console says this,
Error occurred during initialization of VM
java/lang/NoClassDefFoundError: java/lang/Object. FTB Launcher was working until i updated it to 1.2.9. HELP, thanks

 

[antman755]

I am in a similar situation. I get the message
"java.lang.UnsupportedClassVersionError: Bad version number in .class file"
and then an error message appears and says "Could not find the main class. Program will exit".
This also occured after i updated to 1.2.9.

I have tried re-installing everything (including java) and it still isn't working

 

[HazyOG]

anyone help?

 

[AdamRobero]

Antman, I have the exact same error. Mine started when I updated to 1.2.8.

I've re-installed Java, deleted old versions, reinstalled FTB...

Nothing works!

I also emailed the support team two days ago but have had no reply...

 

[AdamRobero]

Okay guys.

I stumbled upon this earlier. I'm pretty sure it works. I got past the screen that normally says "Main Class!" Follow the guide and try it:

http://desk.feed-the-beast.com/index.php?/Knowledgebase/Article/View/9/0/basic-troubleshooting

 

[antman755]

I've tried the basic troubleshooting but it still gives me the error "Could not find main class".

Is there anyway to download previous versions of the launcher?