I (1) downloaded buddypress.pot; (2) made the changes to it using a text editor; (3) copied buddypress.pot to buddypress-en_US.po; (4) used poedit to create buddypress-en_US.mo; (5) copied all 3 files to /wp-content/languages/plugins/; (6) tested Register; (7) messages unchanged.
So I (1) copied all 3 files to /wp-content/plugins/buddypress/bp-languages/; (2) tested Register; (3) messages unchanged.
What did I do wrong?
I’d give WPT Custom Mo File a try, sorry to sound like I’m pushing it, but it could be a quick way around the problem.
There’s also another method if I remember correctly, with that way you load your pot file directly into poedit with editing it in the text editor. that creates the Po file and you then export it as the Mo file. I’d not noticed that page has changed, I’ve not tried it the way it’s described.
When I run WPT Custom Mo File, it returns this error: “Sorry, this file type is not permitted for security reasons.”
I have performed the PoEdit process you described and uploaded the files to the directories I stated earlier. The message was unchanged.
Neither process as described in https://codex.buddypress.org/getting-started/customizing/customizing-labels-messages-and-urls/ seems to work.
More suggestions? Is there a php (or other) file I could edit?
I think the fact that the file was rejected by WPT indicates an issue with your edited file. Possibly, I’ve not done this for a while things might have changed. I’ll take a spin through it tomorrow and get back to you.
I tried it again, and it worked! CASE CLOSED.