As of version 1.6 the mod can now be completely configured from in game. This means that is it no longer necessary to edit any of the config files manually making the mod MUCH easier to use. The configuration screen can be accessed by following these steps:

Step 1) Click on the 'Mods' button on the main menu screen.

Step 2) Select 'Modpack Config Checker from the list of mods the left.

Step 3) Click on the 'Config' button in the bottom left.

Notes

• If you are unsure of what a setting does, hovering over it will display a small description which should make things clearer. However if you are still unsure, experiment!! Or if you prefer, either send me a PM or leave a comment on this thread. I will be happy to explain any of the mods mechanics to you.
• I have created a migration tool which means that all of your settings will transfer to updated versions of the mod. This ensures a seamless transfer, so that there will be no impact on the average user. If an old Config file is detected then the game will automatically give you the option to import your old settings. I have spent a lot of time of this feature, meaning it has a very very high success rate.
• The in game config is only available on 1.11.2 and over (For now). This is due to the greater complexity of this setup on older versions of forge. If you are on a lower Minecraft version you will have to use the legacy config, which is explained below. If there is enough interest I may backport to 1.10.2 or 1.7.10 in the future, but for now these versions will no longer be updated.

Colour coded version of the configuration file. This will show you what values can and cannot be changed.

Colour Key

BLUE: Boolean (Meaning they can only be changed to 'true' or 'false')

RED: String (Meaning they can be changed to any text. eg: 'Hello World')

Green: Integers (Meaning they can be changed to any number. eg: '512')

Config File

"custom greeting message" {

B:"1. Display custom greeting message when joining a world?"=false

# A message that will be displayed in chat when a game is loaded. Will only display if 'Display custom greeting message when joining a world?' equals true [default: Hello there! Welcome to my modpack.]
S:"2. Custom greeting message text"=Hello there! Welcome to my modpack.
}

"custom messagebox" {
B:"1. Show custom messagebox when game loads?"=false
B:"2. Display message box on top of all other windows?"=true

# Enter popup text. Will only display if 'Show custom messagebox when game loads?' equals true [default: Hello World!!]
S:"3. Custom Messagebox text"=Hello World!!
}

"display webpage" {
B:"1. Open web browser to URL when game loads?"=false

# Enter URL to be launched. Will only display if 'Open web browser to URL when game loads?' equals true [default: http://minecraft.curseforge.com/projects/config-checker]
S:"2. URL to webpage"=minecraft.curseforge.com/projects/config-checker
}

"ram recommendation" {
I:"1. Ram Recommended (IN MB)"=2048
B:"2. Check RAM meets recommendation?"=true
B:"3. Display message box on top of all other windows?"=true
B:"4. Display custom text in message box if RAM recommendations not met?"=false

# Enter custom text to be shown if RAM recommendation not met. Will only display if 'Display custom text in message box if RAM recommendation not met?' equals true [default: You should add more RAM.]
S:"5. Custom recommendation text"=You should add more RAM.
B:"6. Display warning in game chat if RAM recommendation not met?"=true
B:"7. Customise game chat RAM recommendation message?"=false

# Enter custom text to be shown in game chat if RAM recommendation not met. Will only display if 'Customise game chat RAM recommendation message?"' equals true [default: [WARNING] You should assign more RAM to this modpack.]
S:"8. Custom chat message"=[WARNING] You should assign more RAM to this modpack.
}

"ram requirement" {
I:"1. Ram Required (IN MB)"=1024
B:"2. Check RAM meets requirement?"=false
B:"3. Display message box on top of all other windows?"=true
B:"4. Display custom text in message box if RAM requirement not met?"=false

# Enter custom text to be shown if RAM requirement not met. Will only display if 'Display custom text in message box if RAM requirement not met?' equals true [default: You need more RAM.]
S:"5. Custom requirement text"=You need more RAM.
}