G3 freezes when opening Excel 98

Excel and Word 98 installed on G3 Macos 8.6 Word works correctly. When Excel is opened the system freezes and has to be restarted. Have tried uninstalling and reinstalling. Upgraded to Macos 10 also but still freezes up.
User has PageMaker, Photoshop, Free Hand and FileMaker Pro. these all worked correctly.