Error: Could not find or load main class 2000

[ThoseCraves]

Everytime I try to launch any mod pack, I get this error, "Error: Could not find or load main class 2000". I force update but nothing works.

 

[KlockesLights]

Same here.

this is the code i'm getting from console from startup of the launcher to launching the modpack.

Spoiler

AnalyticsBackgroundThread started
FTBLaunch starting up (version 1.3.2)
Java version: 1.7.0_25
Java vendor: Oracle Corporation
Java home: C:\Program Files\Java\jre7
Java specification: Java Virtual Machine Specification version: 1.7 by Oracle Corporation
Java vm: Java HotSpot(TM) 64-Bit Server VM version: 23.25-b01 by Oracle Corporation
OS: amd64 Windows 7 6.1
[i18n] Checking for updates ...
[i18n] enUS English language file loaded!
[i18n] remoteVer = 10
[i18n] localVer = 10
[i18n] Files are up to date
[i18n] Fallback enUS loaded
The FTB Launcher has found the following Java versions installed:
Java Version: 1.7.0_45 sorted as: 1.7.0_45 32 Bit Java at : C:\Program Files (x86)\Java\jre7\bin\java.exe
Java Version: 1.7.0_25 sorted as: 1.7.0_25 64 Bit Java at : C:\Program Files\Java\jre7\bin\java.exe
Java Version: 1.7.0_25 sorted as: 1.7.0_25 64 Bit Java at : C:\Windows\system32\java.exe
Java Version: 1.7.0_45 sorted as: 1.7.0_45 32 Bit Java at : C:\Windows\SysWOW64\java.exe
FTB Launcher Prefers: Java Version: 1.7.0_25 sorted as: 1.7.0_25 64 Bit Java at : C:\Program Files\Java\jre7\bin\java.exe
[i18n] Added 0 enUS to options pane
[i18n] Added 1 cyGB to options pane
[i18n] Added 2 daDK to options pane
[i18n] Added 3 deDE to options pane
[i18n] Added 4 esES to options pane
[i18n] Added 5 frFR to options pane
[i18n] Added 6 itIT to options pane
[i18n] Added 7 maHU to options pane
[i18n] Added 8 nlNL to options pane
[i18n] Added 9 ptBR to options pane
[i18n] Added 10 ptPT to options pane
[i18n] Added 11 ruRU to options pane
[i18n] Added 12 svSE to options pane
[i18n] enUS English language file loaded!
Loading modpack information for modpacks.xml...
Adding pack 1
Adding pack 2
Adding pack 3
Adding pack 4
Adding pack 5
Adding pack 6
Adding pack 7
Adding pack 8
Adding pack 9
Adding pack 10
Adding pack 11
Adding pack 12
Adding pack 13
Adding pack 14
Adding pack 15
Adding pack 16
Adding pack 17
Adding pack 18
Adding pack 19
Adding pack 20
Adding pack 21
Adding pack 22
Adding pack 23
Adding pack 24
Adding pack 25
Adding pack 26
Adding pack 27
Adding pack 28
Adding pack 29
Adding pack 30
Adding pack 31
loading map information...
loading texture pack information...
Adding map 1
Adding map 2
Adding map 3
Adding map 4
Adding map 5
Adding map 6
Adding texture pack 1
Adding map 7
Adding texture pack 2
Adding map 8
Adding map 9
Adding texture pack 3
Adding map 10
Adding texture pack 4
Adding map 11
Logging in...
Login complete.
DEBUG: runGameUpdater: ForceUpdate: false
DEBUG: runGameUpdater: installPath: C:\Users\Zach\Desktop\FTB
DEBUG: runGameUpdater: pack dir: Unleashed
DEBUG: runGameUpdater: pack check path: Unleashed\version
debug: initializeMods: pack dir...
Unleashed
Modpack is up to date.
dirs mk'd
debug: installMods: install path: C:\Users\Zach\Desktop\FTB
debug: installMods: temp path: C:\Users\Zach\AppData\Roaming/ftblauncher/
debug: installMods: source: C:\Users\Zach\AppData\Roaming\ftblauncher\ModPacks\Unleashed\minecraft
debug: installMods: packDir: Unleashed
debug: retaining modpack file: C:\Users\Zach\AppData\Roaming\ftblauncher\ModPacks\Unleashed\instMods
debug: retaining modpack file: C:\Users\Zach\AppData\Roaming\ftblauncher\ModPacks\Unleashed\minecraft
debug: retaining modpack file: C:\Users\Zach\AppData\Roaming\ftblauncher\ModPacks\Unleashed\Unleashed.zip
Current: 1.5.2
Required: 1.5.2
The FTB Launcher has found the following Java versions installed:
The FTB Launcher has found the following Java versions installed:
Java Path: C:\Program Files\Java\jre7\bin\javaw.exe
Setting MinMemory to 256
Setting MaxMemory to 1536
Error: Could not find or load main class 2000

 

[Ashzification]

Please post your console logs to pastebin.com and link the pastes here.
Info on logs:
http://forum.feed-the-beast.com/threads/your-logs-and-you-what-you-need-to-know.36509/

 

[KlockesLights]

sorry im new

 

[lavarthan]

You have two different versions of Java installed. A new 32bit version and an old 64bit version. Please uninstall both and any other version of Java, both 32 and 64bit, then restart. Now install only the 64bit version of 7u45 and restart. Now try launching Unleashed again.