When exporting from LR via the LRTexport, I'm choosing the TIFF 8-bit setting on the left column, but in the main window to the right under "Intermediate File Format" it has this as 6K TIFF. If I choose TIFF 16-bit on the left column it still says "6K TIFF" on the right. That seems to be problem number one. By the way, I have the pro version of the latest LRTimelapse 4.1.

So when I go ahead and select "export" I get the error message:
"Wrong LRTExport version used" and I don't get to the final stage in LRTimelapse for selecting codec and exporting final time lapse. Super frustrating. Any ideas?
Thanks!

You have an old and not compatible version of LRTExport plugin (it says 3.4 - should say 4.1). So please reinstall LRTimelapse and make sure that the latest LRTExport plugin gets installed. You can find help here:
http://forum.lrtimelapse.com/Thread-lrt4...-installed