Updated install over a 3.3 version. it seems to be happening anytime I have the inspector selected on SkeletonData. The script is the SkeletonDataAssetInspector script and seems to be when ever the script refrences "
this.m_previewUtility.m_Camera
Unity is saying that's its a obsolete and to use camera instead. As a current work around I just commented out the offending code. Breaks the previewer but is livable.