- find the corrupt bre.ini on you system (it should be under C:\Users\<username>\AppData\Roaming\Lavastorm\LAE6.1)
- rename it to something like bri.iniOLD
- copy one of your backup bre.ini files into that location (under C:\Users or wherever)
- start BRE again
BRE should read the correctly named bre.ini file and used the configuration that you had written to it.