... I fact

it seems bette to Geo-Locate the model either by way of grabbing aerial location or manually > window > model info > geo locate before changing time zone in shadows. Geo-locating updates time zone in any case.

Should work both ways I guess (though a time zone only isn't accurate enough) but least this works.

Yeah UTC-7 is default. well in 2015 it is.

Ive had this issue till recently as well, the above helped out, makes sense that a location that far from a time zone would affect shadows in crazy ways but It never clicked in my head till I read this thread. Thanks guys.

Awesome.
I found this thread looking for an answer to the same problem <Couldn't save styles out for re-use>
List view was the problem, Icon view "fixed" it.
I haven't experimented with saving and re-opening.

Mac OS Mavericks.
Sketchup 2015 pro

I think you were meaning that you couldn't get the tools to lay up on the side on the MAC, like the traditional two columns of basic tools: Draw, Move, Measure, etc. on PC I re-installed Sketchup now now and was also confused about my toolbars.

found them again under >View >Tool Palettes >large tool set.
it has most the common ones leaving space on the top row for 'extra' icons. hope this helps, if it's what you were getting at.