I just tried registering a new user on my installation. I use ru as well. The message looks like this:
In the source (at /admin/customize/site_text/usage_tips), the image is specified as:
<img src="/images/welcome/progress-bar.png" width="143" height="39">
I can fix this setting myself, but then, what would be new, correct path?
I think you can just tell @meglio 