I just got that red banner error also tonight.. saying web folder is on 7.36 and needs to be on 7.37.
Which is strange, in that I was on 7.31 prior to the upgrade.
The netweb.js file in my libsrc\win\netweb\web\scripts folder is dated 3/07/2014 8:35AM, and has the line
;var NetTalkVersion = 7.36;
I edited that to 7.37 and ran the gzipall batch file, and the error went away.
Jane