1.5 Not Downloading Correctly

[BillyF2]

My Modpack did not work in 1.4.7, now I am doing tests with 1.5 forge. I built a little pack with all the appropriate files. When I run my pack I get an error:

Stack Trace:

Exception: EOFException

Message: null

Trace:

java.util.zip.GZIPInputStream.readUByte(GZIPInputStream.java:246)

java.util.zip.GZIPInputStream.readUShort(GZIPInputStream.java:236)

java.util.zip.GZIPInputStream.readHeader(GZIPInputStream.java:140)

java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:56)

java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:65)

org.spoutcraft.diff.JBPatch.bspatch(JBPatch.java:94)

org.spoutcraft.launcher.util.MinecraftDownloadUtils.downloadMinecraft(MinecraftDownloadUtils.java:71)

org.spoutcraft.launcher.UpdateThread.updateMinecraft(UpdateThread.java:319)

org.spoutcraft.launcher.UpdateThread.runTasks(UpdateThread.java:123)

org.spoutcraft.launcher.UpdateThread.run(UpdateThread.java:108)

If Anyone Could help me or tell me what is wrong (believeing that the mine craft.jar can download)I would be thank full.