Good day chaps. May I know what this is and where may one obtain it please? I have performed the obligatory web searches, one result said it was on the DLS under an earlier Trainz build but it's a no go for me.
I'm afraid you will not be able to get that KUID as a result, as -25 KUIDs are only available in TS12 SP1 and later versions (or possibly in TS Mac 2).
I have a solution for your problem. Do install TS12SP1 in a seperate folder and copy the -25 kuid in your TS12 installation. Mostly there is no problem with that.