The drop-down list for selecting a Subversion repository browser contains the
following entries:

(Auto)
Repository browser
FishEye
Repository browser
Sventon

The two items labelled "Repository browser" ought to be "WebSVN" and "ViewVC".
This change happened sometime in the last few weeks (it was OK in previous
builds). I think the problem appeared around the time that Sventon support was
added (though I have no evidence to suggest that it was this that caused it).