Unable to unzip any downloaded modpack through platform URL

[TwixPanda]

Launcher Version: 253

Operating System: Windows 8 (x86) version 6.2

Java Version: 1.7.0_25

Antivirus Program: Windows Defender

Description of Problem:

So I wanted to download a mod-pack such as Infamy or Zeppelin, so I copied the platform URL on to the launcher. I can see the mod-pack, seems fine and I proceed clicking the launch, then this strange error came in:"Error unzipping the following file".

Then I tried downloading another mod-pack, using the same steps, A familiar message came up, I tried using variety of mod-packs and guess what? Same error! Well hope you can catch my drift because I do want to try a mod-pack made by the community.

Also, I checked the console and these logs followed along with the error. They're not from the logs folder by the way.

Error Messages:

Error unzipping the following file

Please consult the modpack author, or try running the pack again

Error Log:

Mod infamy-modern-warfare-3.4.zip already found in the cache.

Expected MD5: null Calculated MD5: 977bfd120236572f368e259531a252da

Starting download of http://www.infamyfiles.com/wp-pack-header.zip, with 3 tries remaining

org.spoutcraft.launcher.exceptions.UnzipException: Error unzipping file: C:\Users\Brian\AppData\Roaming\.technic\infamy-modern-warfare\cache\infamy-modern-warfare-3.4.zip

	at org.spoutcraft.launcher.util.FileUtils.unzipFile(FileUtils.java:285)

	at org.spoutcraft.launcher.UpdateThread.updateModpack(UpdateThread.java:381)

	at org.spoutcraft.launcher.UpdateThread.runTasks(UpdateThread.java:128)

	at org.spoutcraft.launcher.UpdateThread.run(UpdateThread.java:95)

Caused by: net.lingala.zip4j.exception.ZipException: Probably not a zip file or a corrupted zip file

	at net.lingala.zip4j.core.HeaderReader.readEndOfCentralDirectoryRecord(HeaderReader.java:179)

	at net.lingala.zip4j.core.HeaderReader.readAllHeaders(HeaderReader.java:78)

	at net.lingala.zip4j.core.ZipFile.readZipInfo(ZipFile.java:425)

	at net.lingala.zip4j.core.ZipFile.extractAll(ZipFile.java:475)

	at net.lingala.zip4j.core.ZipFile.extractAll(ZipFile.java:451)

	at org.spoutcraft.launcher.util.FileUtils.unzipFile(FileUtils.java:275)

	... 3 more

Caused by: java.io.IOException: Negative seek offset

	at java.io.RandomAccessFile.seek(Native Method)

	at net.lingala.zip4j.core.HeaderReader.readEndOfCentralDirectoryRecord(HeaderReader.java:117)

	... 8 more

java.lang.NullPointerException

	at org.spoutcraft.launcher.GameUpdater.isFinished(GameUpdater.java:61)

	at org.spoutcraft.launcher.GameLauncher.runGame(GameLauncher.java:121)

	at org.spoutcraft.launcher.GameUpdater.runGame(GameUpdater.java:81)

	at org.spoutcraft.launcher.skin.LoginFrame.onEvent(LoginFrame.java:300)

	at org.spoutcraft.launcher.skin.LoginWorker.doInBackground(LoginWorker.java:102)

	at org.jdesktop.swingworker.SwingWorker$1.call(Unknown Source)

	at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)

	at java.util.concurrent.FutureTask.run(Unknown Source)

	at org.jdesktop.swingworker.SwingWorker.run(Unknown Source)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

	at java.lang.Thread.run(Unknown Source)

Mod infamy-modern-warfare-3.4.zip already found in the cache.

Expected MD5: null Calculated MD5: 977bfd120236572f368e259531a252da

Starting download of http://www.infamyfiles.com/wp-pack-header.zip, with 3 tries remaining

org.spoutcraft.launcher.exceptions.UnzipException: Error unzipping file: C:\Users\Brian\AppData\Roaming\.technic\infamy-modern-warfare\cache\infamy-modern-warfare-3.4.zip

	at org.spoutcraft.launcher.util.FileUtils.unzipFile(FileUtils.java:285)

	at org.spoutcraft.launcher.UpdateThread.updateModpack(UpdateThread.java:381)

	at org.spoutcraft.launcher.UpdateThread.runTasks(UpdateThread.java:128)

	at org.spoutcraft.launcher.UpdateThread.run(UpdateThread.java:95)

Caused by: net.lingala.zip4j.exception.ZipException: Probably not a zip file or a corrupted zip file

	at net.lingala.zip4j.core.HeaderReader.readEndOfCentralDirectoryRecord(HeaderReader.java:179)

	at net.lingala.zip4j.core.HeaderReader.readAllHeaders(HeaderReader.java:78)

	at net.lingala.zip4j.core.ZipFile.readZipInfo(ZipFile.java:425)

	at net.lingala.zip4j.core.ZipFile.extractAll(ZipFile.java:475)

	at net.lingala.zip4j.core.ZipFile.extractAll(ZipFile.java:451)

	at org.spoutcraft.launcher.util.FileUtils.unzipFile(FileUtils.java:275)

	... 3 more

Caused by: java.io.IOException: Negative seek offset

	at java.io.RandomAccessFile.seek(Native Method)

	at net.lingala.zip4j.core.HeaderReader.readEndOfCentralDirectoryRecord(HeaderReader.java:117)

	... 8 more

java.lang.NullPointerException

	at org.spoutcraft.launcher.GameUpdater.isFinished(GameUpdater.java:61)

	at org.spoutcraft.launcher.GameLauncher.runGame(GameLauncher.java:121)

	at org.spoutcraft.launcher.GameUpdater.runGame(GameUpdater.java:81)

	at org.spoutcraft.launcher.skin.LoginFrame.onEvent(LoginFrame.java:300)

	at org.spoutcraft.launcher.skin.LoginWorker.doInBackground(LoginWorker.java:102)

	at org.jdesktop.swingworker.SwingWorker$1.call(Unknown Source)

	at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)

	at java.util.concurrent.FutureTask.run(Unknown Source)

	at org.jdesktop.swingworker.SwingWorker.run(Unknown Source)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

	at java.lang.Thread.run(Unknown Source)