Help me fix this

[Alator]

The reason I haven't been playing during on weekdays lately is because I haven't been able to stay at my apartment for work reasons. So until I move into my new apartment in a couple weeks, I have to use my old computer. It SHOULD be able to run Minecraft without any real issue, however I have been getting this error. This surpasses my ability to debug, so I'm looking to you all for help! I'd really like to play on days other than weekends, haha.



Minecraft has crashed!
----------------------

Minecraft has stopped running because it encountered a problem.




--- BEGIN ERROR REPORT 7cf3a456 --------
Generated 6/14/12 9:16 PM

Minecraft: Minecraft 1.2.5
OS: Windows XP (x86) version 5.1
Java: 1.7.0_04, Oracle Corporation
VM: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
LWJGL: 2.4.2
OpenGL: GeForce 8800 GTS/PCI/SSE2 version 3.3.0, NVIDIA Corporation

java.lang.SecurityException: SHA1 digest error for aiy.class
at sun.security.util.ManifestEntryVerifier.verify(Unknown Source)
at java.util.jar.JarVerifier.processEntry(Unknown Source)
at java.util.jar.JarVerifier.update(Unknown Source)
at java.util.jar.JarVerifier$VerifierStream.read(Unknown Source)
at sun.misc.Resource.getBytes(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at net.minecraft.client.Minecraft.a(SourceFile:342)
at net.minecraft.client.Minecraft.run(SourceFile:657)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT 92e7616e ----------

 

[ShizzDawgg]

I would try reinstalling LWJGL.. (Link here--->http://www.lwjgl.org/download.php)
If that doesn't work, then i'd assume that your computer is a little short on memory? No idea really. :x

 

[agentjwall]

If shizz's suggestion doesn't work you can try reinstalling java or see if your video-card drivers need to be updated.