Found Caesar's problem:
I found the version 1.0 files and compared them to the ones with the game. The file constant.ai is missing a bunch of words.
Open the file in a text editor like notepad and add:
' This next section of consts has to deal with the leaders and groups
' This section should NEVER be modified...
const
'Caesarian
J_CAESAR 0,
M_ANTONIUS 1,
GN_DOMITIUS 2,
P_SULLA 3,
A_LEPIDUS 4,
Q_PEDIUS 5,
C_REBILUS 6,
F_MAXIMUS 7,
KING_BOGUD 8,
TRIBUNE_III_CAESARIAN 9,
TRIBUNE_V 10,
TRIBUNE_VI 11,
TRIBUNE_VII 12,
TRIBUNE_VIII 13,
TRIBUNE_IX 14,
TRIBUNE_X 15,
TRIBUNE_XI 16,
TRIBUNE_XII 17,
TRIBUNE_XIII 18,
TRIBUNE_XIV 19,
TRIBUNE_XV 20,
TRIBUNE_XXVII 21,
TRIBUNE_ALAUDAE 22,
CAVALRY_PRAEFECT_I 23,
CAVALRY_PRAEFECT_II 24,
AUXILIA_CAESARIAN 25,
'Pompeian
POMPEY 26,
A_LABIENUS 27,
SCIPIO 28,
GNAEUS_POMPEIUS 29,
C_LENTULUS 30,
D_AHENOBARBUS 31,
L_AFRANIUS 32,
KING_JUBA 33,
A_VARUS 34,
SEXTUS_POMPEIUS 35,
M_PETREIUS 36,
TRIBUNE_I 37,
TRIBUNE_III_POMPEIAN 38,
GALICIAN_TRIBUNE 39,
TRIBUNE_XVI 40,
TRIBUNE_XVII 41,
SYRIAN_TRIBUNE_A 42,
SYRIAN_TRIBUNE_B 43,
MACEDONIAN_TRIBUNE_A 44,
MACEDONIAN_TRIBUNE_B 45,
CRETAN_TRIBUNE 46,
CILICIAN_TRIBUNE 47,
SPANISH_TRIBUNE_A 48,
SPANISH_TRIBUNE_B 49,
SPANISH_TRIBUNE_C 50,
TRIBUNE_XXX 51,
TRIBUNE_L 52,
C_PISO_CAVALRY 53,
PACIDEIUS_1_CAVALRY 54,
PACIDEIUS_2_CAVALRY 55,
C_M_SCIPIO 56,
M_PETREIUS_CAVALRY 57,
A_LABIENUS_CAVALRY 58,
AUXILIA_POMPEIAN 59,
'Roman
MARIUS 60,
SULLA 61,
CATULUS 62,
MURENA 63,
TRIBUNE_III 64,
AUXILIA 65,
'Pontine
ARCHELAEUS 66,
DIOGENES 67,
TAXILES 68,
ARISTION 69,
DROMICHAETES 70,
METROPHRANES 71,
BUPHUS 72,
ERUDITES 73,
ARCHON 74,
'Cimbric
BEORIX 75,
CHIEF_1 76,
CHIEF_2 77,
CHIEF_3 78,
CHIEF_4 79,
CHIEF_5 80,
CAVALRY_COMMANDER_1 81,
CAVALRY_COMMANDER_2 82,
CAVALRY_COMMANDER_3 83,
'Gallic Caesarian
LEGATES 84,
LABIENUS 85,
P_CONSIDIUS 86,
'Gallic Cimbric
HELVETII_CHIEF_1 87,
HELVETII_CHIEF_2 88,
HELVETII_CHIEF_3 89,
BOII_CHIEF_1 90,
TULINGI_CHIEF_1 91,
NERVII_CHIEF_1 92,
NERVII_CHIEF_2 93,
VEROMANDUI_CHIEF_1 94,
VEROMANDUI_CHIEF_2 95,
ATREBATES_CHIEF_1 96,
ATREBATES_CHIEF_2 97;
The game then becomes playable. I have not tested it to completion.
Still not sure what is up with the opening screen buttons. I need to figure out what file it is.