hadrain help! urgent!

[Thermal]

ive tried using the hardian building editor, i followed all the steps to make a new complex of tax buildings, i backed up my export_building txt and export_descr_building txt, b4hand, i tried loading the game with show_err
and then the game ctd after about 5 seconds of loading, with no report saying what the error was, so i used my bk up copies and deleted the old ones....and the same thing happened again even though i looked though im documents erasing my old building detail! why wont it load? should i have have backed up a different txt aswell? im using rome 1.5 version, ive heard it may not be compatable, but what do i do now?
will even a fresh install work if it come to that....(i hope it dont)
any other ideas? help is VERY appriacted!

[Mithril]

guess you have to reinstall again and make back-up of your vanilla folder always before making changes to it i learned this the hardway