Roman Modification leading to a CTD

I have an interesting problem; when i congealed the Romans into 1 faction (Julii) and gave them post Marius soldiers and made lots of other changes to descr_strat, i get an interesting result. After I make these changes, I choose to play as Thracia, then ally with Scythia, and the game crashes in the diplomacy screen. I have traced the issue back to the Julii, through intensive trial and error. Can anobdy even concieve of why this is happening?

A few additional pieces of info:
I have BI but no later patches
The diplomacy proiblem crashes as other factions as well, including the Julii
I have only my modded descr_strat file in with all original files
I cannot post my descr_strat file, as im not interent enabled at the moment, writing from a cafe

I have several other problems, but they are irreleant for now as they deal with other files. This crash makes the game unplayable. :( I'm looking forward to your help solving this problem. :)

I don't remember precisely, but I think there's more to mod than the mere descr_strat file if you want to unite Roman factions.

There are plenty of thread dealing with this subject, like this one:
https://forums.totalwar.org/vb/showthread.php?t=70329

For CTD issues, you should first check in here
https://forums.totalwar.org/vb/showthread.php?t=58801
Did you kept a note of what you changed ?

Then, have a look in the Scriptorium, and in modding answers

More importantly
Do you have a back up ?

If you manage to go back to the original version, I think there's a united rome patch somewhere. It should definitely come in handy.

MAke sure you have an only faction leader and an only faction heir.
This can cause the CTD if you have two or more factions leaderes or heirs

well, thanks for the help. I found the problem. i had changed the brutii ans scipii to other factions, then deleted them completely..whoops! Intsead of strating another thread and clogging the board. I'll post my other questions I referred to.
First, I have followed the directions for adding more hidden resources, but whenever i have the game generate a new map.rwm, the game will not run, it crashes when i click on a faction to start the imperial campaign. I noted that whenever I do this map.rwm thing, 2 files appear in the creative assembly file.
1 is corrected_regions.tga or some such name, and I don't remember what the other one is. I have changed territory ownership in descr_strat.

Is it possible that I need to replace descr_regions with this new file...corrected_regions? I know its not part of the bi patch. I really would like to add some hidden resources.

Second question, what programs are needed to mod Rome Total War's every useful aspect? I want to go into depth with my modding but lack any of the necessary programs except notepad
thanks for the help.