HI! The friends of the Graviteam Forum! I saw your questions. I try to answer these questions now.
1. The mission "tiger_01" needs "Rends' Prokhorovka map". Kyth guessed right.
You can get the map from "Rends_Prokhorovka" or "Missions_pack_1.0b".
2. Location of the "SPM1.5_units.text": \Steel Fury - Kharkov 1942\data\k42\loc_rus\text
I am a Chinese. My English is bad.
I hope that you will understand my answer.