I've tried to install MWS to my N95 without success. The install process fails after accepting to install at the phone with an extrange "Error de actualización!" (spanish firmware, could be translated as "Update error!")
My N95 version is:
I tried both "MobileWebServer_beta_v12.sis" and "MobileWebServer_beta_v11.sis" with the same bad result.
My phone had a previous PyS60 version installed (1.4.2 final), so I also tried to uninstall it completely and try again... but the same error always abort the WMS installation...