When i install vault it dousnt work, look here at the console log after

** Connecting...
** Connected.
** Authenticating...
:) Authenticated.
** Server implementing MCS-Wrapper 2012-10-10 00
Caused by: java.util.zip.ZipException: zip file is empty
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.(ZipFile.java:214)
at java.util.zip.ZipFile.(ZipFile.java:144)
at java.util.jar.JarFile.(JarFile.java:152)
at java.util.jar.JarFile.(JarFile.java:116)
at org.bukkit.plugin.java.JavaPluginLoader.getPluginDescription(JavaPluginLoader.java:193)
... 8 more
2012-10-23 12:15:38 [INFO] [NoWeather] Loading NoWeather v1.7.6
2012-10-23 12:15:38 [INFO] [Enjin Minecraft Plugin] Loading Enjin Minecraft Plugin v2.3.4-bukkit
2012-10-23 12:15:38 [INFO] [GroupManager] Loading GroupManager v2.0 (2.9.4) (Phoenix)
2012-10-23 12:15:38 [INFO] [WorldEdit] Loading WorldEdit v5.4.2
2012-10-23 12:15:38 [INFO] [CoreProtect] Loading CoreProtect v1.6
2012-10-23 12:15:38 [INFO] [WorldGuard] Loading WorldGuard v5.5.4
2012-10-23 12:15:38 [INFO] [ColourFireWorks] Loading ColourFireWorks v2.0.5
2012-10-23 12:15:38 [INFO] [Permissions] Loading Permissions v3.1.6
2012-10-23 12:15:38 [INFO] [Essentials] Loading Essentials v2.9.4
2012-10-23 12:15:38 [INFO] [ChestShop] Loading ChestShop v3.46
2012-10-23 12:15:38 [INFO] [EssentialsChat] Loading EssentialsChat v2.9.4
2012-10-23 12:15:38 [INFO] [EssentialsSpawn] Loading EssentialsSpawn v2.9.4
2012-10-23 12:15:38 [INFO] [Essentials] Loading Essentials v2.9.4
2012-10-23 12:15:38 [INFO] [ChestShop] Loading ChestShop v3.46
2012-10-23 12:15:38 [INFO] [EssentialsChat] Loading EssentialsChat v2.9.4
2012-10-23 12:15:38 [INFO] [EssentialsSpawn] Loading EssentialsSpawn v2.9.4
2012-10-23 12:15:38 [INFO] Preparing level "world2"
2012-10-23 12:15:38 [INFO] Preparing start region for level 0 (Seed: 973811611477310519)
2012-10-23 12:15:39 [INFO] Preparing start region for level 1 (Seed: 3831702823006534962)
2012-10-23 12:15:39 [INFO] Preparing spawn area: 16%
2012-10-23 12:15:40 [INFO] Preparing start region for level 2 (Seed: 3831702823006534962)
2012-10-23 12:15:40 [INFO] [NoWeather] Enabling NoWeather v1.7.6
2012-10-23 12:15:40 [INFO] [Enjin Minecraft Plugin] Enabling Enjin Minecraft Plugin v2.3.4-bukkit
2012-10-23 12:15:40 [INFO] [GroupManager] Enabling GroupManager v2.0 (2.9.4) (Phoenix)
2012-10-23 12:15:40 [INFO] GroupManager version 2.0 (2.9.4) (Phoenix) is enabled!
2012-10-23 12:15:40 [INFO] [WorldEdit] Enabling WorldEdit v5.4.2
2012-10-23 12:15:40 [INFO] WEPIF: Using the Bukkit Permissions API.
2012-10-23 12:15:40 [INFO] [CoreProtect] Enabling CoreProtect v1.6
2012-10-23 12:15:40 [INFO] CoreProtect version 1.6 is enabled!
2012-10-23 12:15:40 [INFO] [CoreProtect] Using file based data storage.
2012-10-23 12:15:40 [INFO] [WorldGuard] Enabling WorldGuard v5.5.4
2012-10-23 12:15:40 [INFO] WorldGuard TNT ignition is PERMITTED.
2012-10-23 12:15:40 [INFO] WorldGuard Lighters are PERMITTED.
2012-10-23 12:15:40 [INFO] WorldGuard Lava fire is blocked.
2012-10-23 12:15:40 [INFO] WorldGuard Fire spread is UNRESTRICTED.
2012-10-23 12:15:40 [INFO] [WorldGuard] Loaded configuration for world 'world2'
2012-10-23 12:15:40 [INFO] WorldGuard TNT ignition is PERMITTED.
2012-10-23 12:15:40 [INFO] WorldGuard Lighters are PERMITTED.
2012-10-23 12:15:40 [INFO] WorldGuard Lava fire is blocked.
2012-10-23 12:15:40 [INFO] WorldGuard Fire spread is UNRESTRICTED.
2012-10-23 12:15:40 [INFO] [WorldGuard] Loaded configuration for world 'world2_nether'
2012-10-23 12:15:40 [INFO] WorldGuard TNT ignition is PERMITTED.
2012-10-23 12:15:40 [INFO] WorldGuard Lighters are PERMITTED.
2012-10-23 12:15:40 [INFO] WorldGuard Lava fire is blocked.
2012-10-23 12:15:40 [INFO] WorldGuard Fire spread is UNRESTRICTED.
2012-10-23 12:15:40 [INFO] [WorldGuard] Loaded configuration for world 'world2_the_end'
2012-10-23 12:15:41 [INFO] [WorldGuard] 26 regions loaded for 'world2'
2012-10-23 12:15:41 [INFO] [WorldGuard] 0 regions loaded for 'world2_nether'
2012-10-23 12:15:41 [INFO] [WorldGuard] 0 regions loaded for 'world2_the_end'
2012-10-23 12:15:41 [INFO] [ColourFireWorks] Enabling ColourFireWorks v2.0.5
2012-10-23 12:15:41 [INFO] No economy found
2012-10-23 12:15:41 [INFO] [ColourFireWorks] Loading Custom Fireworks
2012-10-23 12:15:41 [INFO] [ColourFireWorks] Checking Mob Names
2012-10-23 12:15:41 [INFO] [ColourFireWorks] Checking Item IDS
2012-10-23 12:15:41 [INFO] [ColourFireWorks] Config Loaded
2012-10-23 12:15:41 [INFO] [ColourFireWorks] You are running the latest version!
2012-10-23 12:15:41 [INFO] [ColourFireWorks] WorldGuard Found!, Linked!
2012-10-23 12:15:41 [INFO] [ColourFireWorks] Vault Not Found!, Not Linked!
2012-10-23 12:15:41 [INFO] [ColourFireWorks] ColourFireWorks v2.0.5 activated!
2012-10-23 12:15:41 [INFO] [Permissions] Enabling Permissions v3.1.6
2012-10-23 12:15:41 [INFO] Fake Permissions version 3.1.6 is enabled!
2012-10-23 12:15:41 [INFO] WEPIF: Using the Bukkit Permissions API.
2012-10-23 12:15:41 [INFO] [Essentials] Enabling Essentials v2.9.4
2012-10-23 12:15:42 [INFO] Essentials: Using GroupManager based permissions.
2012-10-23 12:15:42 [INFO] [ChestShop] Enabling ChestShop v3.46
2012-10-23 12:15:42 [INFO] [ChestShop] Essentials version 2.8.2 loaded.
2012-10-23 12:15:42 [INFO] [EssentialsChat] Enabling EssentialsChat v2.9.4
2012-10-23 12:15:42 [INFO] [EssentialsSpawn] Enabling EssentialsSpawn v2.9.4
2012-10-23 12:15:42 [INFO] Server permissions file permissions.yml is empty, ignoring it
2012-10-23 12:15:42 [INFO] Done (4.485s)! For help, type "help" or "?"

doesn't look like you installed Vault to your plugins directory, or the file is corrupt, I suggest re-downloading it.

i have redownloaded it and reinstalled it several times. it tells me file not found in plugins folder. thats what happens.. as if every time i install it. it wont create a new folder with the files i need or it needs.

The issue is your server is not letting you upload the file. This is not an issue in Vault. please check with your server host on how to upload a file properly.

wow no help from vault.
thanks for nothing

this is also what it tells me when i try to upload the .jar file into my dir.

Vault(3).jar:
File upload failed: Server returned:
Transfer file to server failed.

that is a new download as well. so what would the problem be. this is a list of all my plugins

ChestShop3-46
ColourFireWorks
CoreProtect
EnjinMinecraftPlugin
EssentialsChat
EssentialsGroupBridge
EssentialsGroupManager
Essentials
EssentialsSpawn
NoWeather
Vault(3)
WorldEdit
WorldGuard

@ppaat - this is not a Vault issue. you posted exactly the problem right here:
Vault(3).jar:
File upload failed: Server returned:
Transfer file to server failed.

This has nothing to do with Vault, and everything to do with uploading files to your server. I can't help you out with this issue, perhaps your server host can.

👊 @ppaat