Extended Precision Library by G.E.

[robmio]

Hello, I find it difficult to make ”Extended Precision Library” work.
The author of the program is G.E.
The library consists of 3 "hpprgm" programs.
After having transferred the three programs in the HP PRIME virtual calculator, ie "multiprecision", "mutiprecision2" and "testmulti", and after having opened them (shift program, EDIT, Check), I get an error message:

1) In “multiprecision”, I get an error on line 265;
2) In “multiprecision2”, I get an error on line 170;
3) In “testmulti”, I get an error on line 108;

Where am I doing wrong?
Yours sincerely, Roberto Mioni