Built this one with a up-to-date copy from the svn (but with native Lua supported) on my Win7 box (but not with CHDK-Shell).
http://www.box.com/s/6d1c38eb8d74b33330db
Using this build here are my test results
Free Memory: 425416 bytes
CHDK size: 222736 bytes
loaded at: 0x1F5FFE0
setmode.lua stil shows 15 FAILED check log
With "mode chagne delay, ms" set to 250 it works just fine and cycles through a bunch of modes
Lowered delay to 150 and it still works just fine
Further lowered to 75 and it still works
Down to 40 ms, 3 failed but the rest worked
Upped to 50 ms, still works
setrec.lua seems to work just fine (leaving me in view image mode)
tstcallf.lua gives "2 FAILED"
uartrtst.lua seems to work (just shows "***STARTED***" and "***FINISHED***"