I cant seem to get Privileges and mChat to work together, and when I use the
/vault-info command, privileges is not showing as loaded.

Privileges build 164
Vault build 308

I don't know what build of Privs works with which build of vault. I just know latest Privs has been tested and works with Vault. mChat may/may not work, I haven't seen updates on it in a while. I would need some form of stack trace/server.log to help you out here.

looks fine to me. mChat doesn't link with permission plugins, and Vault is hooking Privs fine. It's just reporting it without a name cause I forgot to change the name on the privs interfaces but this doesn't affect the hook at all.

This is all I get;

10:08:07 [INFO] [Vault] Enabling Vault v1.2.25-b308
10:08:07 [INFO] [Vault][Economy] Essentials Economy found: Waiting
10:08:07 [INFO] [Vault][Permission] Privileges found: Loaded
10:08:07 [INFO] [Vault][Permission] SuperPermissions loaded as backup permi
system.
10:08:07 [INFO] [Vault][Chat] mChatSuite found: Waiting
10:08:07 [INFO] [Vault] Enabled Version 1.2.25-b308
10:08:07 [INFO] [Vault][Economy] Essentials Economy hooked.
10:08:07 [INFO] [Vault][Permission] hooked.
10:08:07 [INFO] [Vault][Chat] mChatSuite hooked.
10:08:07 [INFO] [Privileges] Enabling Privileges v1.8-b164
10:08:07 [INFO] [Privileges] [Metrics] Tracking total number of groups.
10:08:07 [INFO] [Privileges] [Metrics] Tracking total number of users.

vault-info
10:08:20 [INFO] [Vault] Vault v1.2.25-b308 Information
10:08:20 [INFO] [Vault] Economy: Essentials Economy [Essentials Economy]
10:08:20 [INFO] [Vault] Permission: [, SuperPerms]
10:08:20 [INFO] [Vault] Chat: mChatSuite [mChatSuite]