i have 3 groups 
Default group icon shows fine and so does Admin - why does VIP not show if i set someone to vip
Can someone see if my betterchat/data file is correct - thanks

[
  {
    "GroupName": "default",
    "Priority": 0,
    "Title": {
      "Text": "✪",
      "Color": "#55aaff",
      "Size": 15,
      "Hidden": false,
      "HiddenIfNotPrimary": false
    },
    "Username": {
      "Color": "#4781ed",
      "Size": 15
    },
    "Message": {
      "Color": "white",
      "Size": 15
    },
    "Format": {
      "Chat": "{Title} {Username}: {Message}",
      "Console": "{Title} {Username}: {Message}"
    }
  },
  {
    "GroupName": "vip",
    "Priority": 2,
    "Title": {
      "Text": "❂",
      "Color": "#1666f1",
      "Size": 15,
      "Hidden": false,
      "HiddenIfNotPrimary": true
    },
    "Username": {
      "Color": "#3395f7",
      "Size": 15
    },
    "Message": {
      "Color": "white",
      "Size": 15
    },
    "Format": {
      "Chat": "{Title} {Username}: {Message}",
      "Console": "{Title} {Username}: {Message}"
    }
  },
  {
    "GroupName": "admin",
    "Priority": 1,
    "Title": {
      "Text": "Ⓐ",
      "Color": "#ff5555",
      "Size": 15,
      "Hidden": false,
      "HiddenIfNotPrimary": false
    },
    "Username": {
      "Color": "#ff5555",
      "Size": 15
    },
    "Message": {
      "Color": "white",
      "Size": 15
    },
    "Format": {
      "Chat": "{Title} {Username}: {Message}",
      "Console": "{Title} {Username}: {Message}"
    }
  }
]​

Assuming by "icons" you mean titles, the title for your VIP group is not shown because it's priority is lower than the default group priority and it has "HiddenIfNotPrimary" enabled.

Remember for priorities 0 > 1, imagine it like "1st Priority", "2nd Priority" and so on.
In your case the priorities would usually be
admin : 0
vip : 1
default : 2

cheers LaserHydra