The Macintosh PowerBook 190 and 190cs computers requires the installation of the Font Extension 3 software in the System Folder in order for the JLK software to load properly. This extension is in the Apple Extras folder on your PowerBook computer's hard drive.
Use the following procedure from the JLK Read Me to install the Font Extension 3 software.
1. Follow the instructions for installing the Japanese Language Kit 1.2 that came with the software.
2. After you see that the installation was successful, restart the computer with the Extensions off. To do this, hold down the shift key while you press the Restart button in the installer screen (or as you choose Restart from the Special menu). Continue holding the shift key down until you see the "Welcome to Macintosh, Extensions off" message.
3. Double-click the Apple Extras folder on your hard drive to open it.
4. Double-click the JLK 1.2 Update folder to open it.
5. Drag the file "Font Extension 3" to the Extensions folder (inside the System Folder) on your hard disk. Click OK if you see a dialog box asking if it is ok to replace this file.
6. Choose Restart from the Special menu.
Your JLK software is now ready to use.