Changing the interface language in Wysiwyg profiles deactivate the editor

I can confirm this issue in the -dev version as well.

The editor works normally in English. It does not work in German, even when installed as explained here: http://tinymce.moxiecode.com/wiki.php/Language

I installed the language files downloaded from this page: http://tinymce.moxiecode.com/i18n/index.php?ctrl=lang&act=download&pr_id=1

You need to make sure all native TinyMCE plugins have translations as well, including any native plugins provided by other modules. Otherwise, the editor will simply crash. There's nothing we can do about the crash itself, TinyMCE doesn't perform any checks or otherwise indicate that translation files are missing before trying to use them.

We're planning to make these problems less of a hassle with: #1055298: Limit language selection to installed languages, #362318: Limit wysiwyg language selection to available languages and finally #532794: Use current user's language. Most likely in that order.

Just to verify this is not a bug in Wysiwyg; which buttons/plugins do you have active and exactly which translation files have you downloaded?

@thomasvum, if you wish to use a language other than English for the editor, you'll need to download translations from the last link wizonesolutions posted.
TinyMCE only ships with English so it'll crash if you select something else.

Without further information, I can only close this issue.
@wizonesolutions If you are still experiencing problems with the language setting, can you please reopen the issue and list which translation files you downloaded?