[pincoball]

Regarding the problem of the splitting feature of UltraARC, I think I've found the causes of it during the merging

First problem:

The split.exe executable were not extracted from the {tmp} directory:

Solution:

from

procedure UnpackCompressors();
var
  CurrFile: String;
begin
  ExtractTemporaryFile('Arc.ini');
  ...
  ExtractTemporaryFile('Facompress_mt.dll');

to

procedure UnpackCompressors();
var
  CurrFile: String;
begin
  ExtractTemporaryFile('Arc.ini');
  ...
  ExtractTemporaryFile('Facompress_mt.dll');
  ExtractTemporaryFile('Split.exe');

Second problem:

Edit: Removed: It was a problem that I made in my script

Edit: I also attach the records.ini I've been using just for reference