instalation problems

i tried installing bp-bgt with the mega install instructions, but got this problem when installing bgt

Patching dialog.tlk. Please wait...
Copying and patching 1 file ...
loading 1 tra file
Creating 1 directory
Copying 1 file ...
SET_STRING 73247 out of range 0 -- 62169
Stopping installation because of error.

i had already tried to install bgt once, and it was all working fine, but i didnt have enough space, so it eventually started having install errors. since i read in the readme that bgt doesnt change the contents of the bg1 install, i just uninstalled bg2, erased everything in the bg2 folder, and reinstalled it.

can anyone help me out?