CBSubs Language String substitution failure

Sometimes CBSubs expiration emails do not send language replacement strings, only the string code. Not always, but maybe 1 out of 10 times the emails that go out only show, for example, _UE_EXPIRED_SUB_HF for the subject (it should be "WWOOF Japan Host Membership Expired 期限が過ぎました") and the body of the message shows only _UE_EXPIRED_MSG_HF instead of the full text that should replace it. I cannot detect a pattern to when it happens and it occurs across several plans, not just one.

Joomla! 2.5.28
CB 1.9.1
CBSubs 3.0.0

CB 1.x sends emails in the language of whoever is sending them. If no user is sending them (e.g. CRON is doing it) then it's sent in the language of the site. If the site language (e.g. lets say English) doesn't have that string translated then you'll get those results. To avoid this ensure all your new language strings exist in English and in the language you're using. In CB 2.x we send the emails in the language of the recipient, but the same principle applies (ensure English and any other languages all have the same language keys translated).

The exact same strings are present, and have always been present, in the language files of both site languages, so it appears to me that, for some reason, CBSubs is doing language string substitutions most of the time but not every time.

We've significantly improved language loading in CB 2.x. My guess is your issue is specific to CB 1.x or CBSubs 3.x. I'm unable to find a cause for this in CB 2.x. I recommend upgrading when possible. If possible clone your site, upgrade, and then test to see if you can reproduce on CB 2.x and CBSubs 4.x.

Trying to update Community Builder to 2.0.9 from 1.9.1 with multi language files. I have gone through the process of updating all plugins and have installed the language override plugin. I have copied files as instructed and now I find that the 1.9.1 language file format is different than 2.0.9? When I try to copy and past something like this from 1.9.1 language file, I get an error

DEFINE('_UE_LOST_USERNAME_OR_PASSWORD','ユーザ名またはパスワードを、または両方忘れましたか？');

The new format can only be like this?

'UE_LOST_USERNAME_OR_PASSWORD' => 'ユーザ名またはパスワードを、または両方忘れましたか？',

We don't use defines anymore (if we did overrides wouldn't work). You need to use the CBTxt string usage as follows.

'KEY' => 'STRING'

See the below for language usage information. Please also see the CB 2.0 Primer Book which also contains language usage information.

www.joomlapolis.com/cb-solutions/languages