Hi Fraser Robinson 

I have already answered your two other posts but in case you see this one first...

I don't think you do need to change your languages as if you have one version of Chinese installed, the others should also be installed. You can check this by going to File > Options > Editor > Languages as I indicated in your other post.

If  you find that is not the case, then take a look here:

How to change the 5 languages

you will see that Sandor Juhasz contacted Installation Support and that they reset the languages quickly without uninstalling/reinstalling Studio, by editing the registry (HKEY_CURRENT_USER\Software\Microsoft\LDSRClient15 was renamed to LDSRClient15.old).

If you feel confident enough to change your PC registry, you could try this. If not, contact installation support here:

Installation support

Fill out the form, explain your problem and give them an accurate email address to contact you on and they can access your computer to change that setting for you.

All the best,

Alison