Doug. Thanks for note. I looked on the Yourhead site for latest version etc but missed the note you mention. However I sent a screenshot of the log to Yourhead. I have since downgraded to 8.17 (seems others have had fairly good exp with this one) and giving that version a go. I was previously on 8.03 which worked really well, however it was pre the big change on Resources. I am a UIKIT fan and their new version 3 requires a more recent version of RW, so hence a deep breath and trying out 8.17.