There is an issue in RPG Maker XP and VX where trying to create an encrypted archive for projects exceeding 128 MB results in a non-working installer.
To address this issue I have created a small Java application which allows you to encrypt your RPG Maker XP and RPG Maker VX games.
I.e. create the Game.rgssad or Game.rgss2a. You can download it here: http://www.mediafire...9xc9maz528fthak
It is also way faster because you don't have to wait for the installer to be created.
To use it place it in the same directory as your game.

Next run the .jar file, which can be done by double-clicking on it, pressing enter, etc. (Requires Java)
You now get the option to choose which maker the game is made with. (Hmm... why didn't I just check that automatically >_> )

In this case it is made with RPG Maker XP so I click on that button and close the Encryption Completed! dialog afters.
You should now see a new file called Game.rgssad

The Game.rgssad file contains all the Data and Graphics files, but not anything else.
So I suggest we copy the relevant files into a new directory which would equal the package the normal installer creates.
This is everything except the Data and Graphics folder, and the Game.rxproj file, which is only relevant to the actual game editor.

There, all ready to be played and packaged in what ever your prefer.
P.s. you can rename the Game.* files as long as they all have the same name. I.e. this is valid:

Download
http://www.mediafire...9xc9maz528fthak
*hugs*
- Zeriab