Have the plugin installed on several sites, works fine (and is brilliant).
Have one site that also uses "Dave's WordPress Live Search"; DWLS works fine in the base language but Transposh is (at my request and a requirement of the site) adding language codes to the front of URLs for other languages. This is confusing DWLS somewhere, so AJAX calls go from:
and the search query fails with a 404 (unsuprisingly...!)
Not sure if this is a DWLS issue or a transposh issue.