Holding point only...for some reason I am getting errors today from Preamble.tex...going to revert to earlier commit to sort it out
Cleared up a glitch which I think was caused by begin{center} coming between begin{frame} and begin{table}. It seems OK if begin{center} is moved to between begin{table} and begin{tabular}. No time to narrow it down more...so long as it works. Annoying thing is I had not changed anything in Preamble.Rnw in the first place...