How to install MEIOU:JV or MEIOU:PH ?
• Check you have installed the correct patch !
• Download it some place, like on the desktop.
• Delete the previous version of the mod
• Copy the contents of the downloaded zipped file to your main EUIII directory (you can use 7zip).
--- Check that you have the MEIOU Launcher in the main EUIII directory
--- Check that in the mod folder, you have and MEIOU folder, and a MEIOU.mod file
• Click on the first button ("Click here on first install") of the Launcher, even if it is already done from a previous version
• Use the Launcher to play with TOT v3.0 or HDM v2.30, for the first time, even if it is already as you wish
• You might need to delete the MEIOU cache files (using the Launcher)
• Pick a font for the map (the AM Map Bold and Aquilline fonts can prove not to work)
• You might experience memory issues when playing with SRI AI. If so, either :
--- for 32bits computers, try the solution in George LeS' post
--- for 64bits computers, try the solution in SnakeByte99'post
or
--- simply use the Launcher to remove SRI AI (using the setup event will not suffice).
• Launch the game
• Have fun 
.
How to install MEIOU:BE or MEIOU:NA ?
• Check you have installed the correct patch !
• Download it some place, like on the desktop.
• Delete the previous version of the mod (including the Graphic_View_selector directory)
• Decompress and copy to your main EUIII directory.
• Overwrite the Graphic_Mod_Switcher folder
• Use the included Graphic Selector to play with TOT v3.0, HDM v2.11 or HDM v2.21, for the first time, even if it is already as you wish
• Pick a font for the map
• Launch the game
• Have fun 
.