lucy24 - 10:18 am on Aug 28, 2013 (gmt 0)
Could it be that the fact that '/tece' folder doesn't exist makes a problem?
You mean the physical directory is no longer there, it's just a part of the URL? No, in most situations that would have no effect. After all, the whole reason for the redirect is to intercept requests before they get a chance to find out whether the original target exists or not.
Does JD's suggested rule work if you leave off the opening anchor? If the rule is lying loose in the config file, rather than inside a <Directory> section, there's no telling what the path really looks like. (That is: Someone who knows your server and speaks Apache can tell, but I can't.) So try it without anchors.
This redirection redirects all "www.example.com" requests to "www.example.com/fr/index.jsp".
If this is happening within one specific page, then it can't affect any requests that don't reach that page.