Looks like Texts module does not always return R.eot on 64bit systems. That happens because
IF u IS Piece
in the procedure Read may return TRUE on 64bit systems, while in the same situation it returns FALSE on 32bit systems.
64bit system:
32bit system:
This is the macro which implements the IS test:
#define __ISP(p, typ, level) __IS(__TYPEOF(p),typ,level)
It's in SYSTEM.h, and does not work correctly on 64bit systems.