The errors are pretty insignificant, probably caused by the japanese version being more recent (the japanese SmileBasic might be on a higher version with less strict syntax).
They'll probably release these demos here too soon.
Here's how to fix the "mario game"(JAMPGAMETEST):
on line 623:
SPHIDE 3:SPSET 3,230
change to
SPSET 3,230:SPHIDE 3
on line 646:
SPOFS I,IX[I],IY[I],IZ[I]
change to
IF I < E THEN SPOFS I,IX[I],IY[I],IZ[I]