Most toolbar icons & menus blanked on 2.4 installation

Take a look at https://portableapps.com/node/11400 and see if it applies.

And welcome to portable apps.

You may notice that a lot of people suggest that everyone uses the search feature, but I'm not going to tell you that, since I was only able to find this answer in search so easily because I new the solution, rather than just the problem (And if I didn't add this comment, someone else would only chime in suggesting that you search before posting )

Sometimes I hear some profile setting goes wrong. Try renaming your "user" folder to a different name. Exit OOo fully and rename it, then launch it again and a default one is created.

If that does it you can move things you want chunk by chunk. Maybe try moving everything but the writer toolbar from your old one, and use the default new toolbar folder. If you can, of course do all this on a hard drive as it's so much faster.

D:\_256\PORTABLE APPS\OpenOfficePortable\Data\settings\user