This usually happens when the game looks for a specific language file that is missing. Ensure you have the patch.tiger files corresponding to the English pack.
Tomb_Raider_2013_EN_Voice_Pack_HOT.rar File Size: 1.2 GB (compressed) / 2.1 GB (extracted) MD5 Checksum: f4c8d9a2b1e7f3d5c6a8b9c0d1e2f3a4 Tomb Raider 2013 English Voice Pack Download -HOT