Minecraft Forums

İ have made a modpack called UltimateWarPack http://www.technicpack.net/modpack/details/ultimatewarpack.344623/

As i said my minecraft doesnt open with the mods in my modpack. Download it to see the mods. The same thing happens on tekkit main, attack of the b-team and most packs that include flans. İ downloaded a pack called alpha flight modpack and it has flans. İt works fine. İ think its a problem with modpacks that have mekanism + flans mod together.

Oh and i almost forgot. Here is the crash report

Analytics Response [runModpack]: 200
[B#439] Exception in thread "main" java.lang.SecurityException: class "acf"'s signer information does not match signer information of other classes in the same package
[B#439] at java.lang.ClassLoader.checkCerts(Unknown Source)
[B#439] at java.lang.ClassLoader.preDefineClass(Unknown Source)
[B#439] at java.lang.ClassLoader.defineClass(Unknown Source)
[B#439] at java.security.SecureClassLoader.defineClass(Unknown Source)
[B#439] at java.net.URLClassLoader.defineClass(Unknown Source)
[B#439] at java.net.URLClassLoader.access$100(Unknown Source)
[B#439] at java.net.URLClassLoader$1.run(Unknown Source)
[B#439] at java.net.URLClassLoader$1.run(Unknown Source)
[B#439] at java.security.AccessController.doPrivileged(Native Method)
[B#439] at java.net.URLClassLoader.findClass(Unknown Source)
[B#439] at java.lang.ClassLoader.loadClass(Unknown Source)
[B#439] at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
[B#439] at java.lang.ClassLoader.loadClass(Unknown Source)
[B#439] at java.lang.ClassLoader.defineClass1(Native Method)
[B#439] at java.lang.ClassLoader.defineClass(Unknown Source)
[B#439] at java.security.SecureClassLoader.defineClass(Unknown Source)
[B#439] at java.net.URLClassLoader.defineClass(Unknown Source)
[B#439] at java.net.URLClassLoader.access$100(Unknown Source)
[B#439] at java.net.URLClassLoader$1.run(Unknown Source)
[B#439] at java.net.URLClassLoader$1.run(Unknown Source)
[B#439] at java.security.AccessController.doPrivileged(Native Method)
[B#439] at java.net.URLClassLoader.findClass(Unknown Source)
[B#439] at java.lang.ClassLoader.loadClass(Unknown Source)
[B#439] at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
[B#439] at java.lang.ClassLoader.loadClass(Unknown Source)
[B#439] at net.minecraft.client.main.Main.main(SourceFile:37)

Please help.Oh and i disabled my antivirus it still doesnt work. İ added java to my firewall. still not working.

Well there is no crash report. When i click the PLAY button on the technic launcher it loads some thingys but it doesnt open. Thats what i see at the technic launcher console. Please help!

Help?