Thanks David,
Actually you have some fields like a2, a5, a8 that are defined with the (old) multi-line field tag, repeating the tag name in each line:
UNLOAD[a2 ]
REMARK[ a2 ]
[ a2 ]
[ a2 ]
[ a2 ]
This is now interpreted as a list/Matrix field...
You should remove the tag name in subsequent tags.
Seb