nuke3_0

I got it to work just reinstalled the whole launcher thanks for your help though.

I have the exact same problem i am hoping i get an answer soon and i have a thread so if i get an answer then ill post it here

i have kaspersky anti virus and windows firewall but both are off my java is version 7 update 21. also edited origal post with more info.

Title: Can't open hexxit from launcher Version: 1_0_4 OS: windows 7 Java Version: 7 update 21 Description of Problem: I have done the long download the first time and since have tried to open it but all it does is hide the launcher. also have tried resetting packet and computer both to no effect. have tried to open tekkit also which i used to be able to open but that doesn't work either. opened console and got this error msg when tried to open hexxit: Error: Could not find or load main class net.technicpack.legacywrapper.Launch uninstalled and reinstalled technic and it works now so if anyone has a similar problem thats probly the answer.