I know how to solve battlefield 2142 v1.5
tested 100% work
tools needed:
1.battlefield 2142
2.battlefield 2142 v1.0/1.4 crack
3.1 unit computer
4.intelligence
following steps are:
1.Backup dll files and all folders except the mods before installing v1.5
2.Install battlefield 2142 version 1.5
3.restore your backup files and folders into a folder of your battlefield 2142
4.enjoy it
you can use whatever version of the crack after using this method
sorry if my english is not good because i'm Indonesian