So, I recently bought the game from Steam, downloaded it. First time, it didn't open, all I got was a black screen. So,I verified the game cache, Steam redownloaded the big files. Now, it says - "Archive BIGFILE.000 isn't large enough! (should be at least 2146435071 bytes)" ....!

I checked the BIGFILE.000 size, and under Properties tab, it shows to be of (2,146,160,640 bytes) which is clearly short of what it expects it to be(according to the error message). So, I rerdownloaded all the BIGFILE-s and yet the sizes are same, and I \keep getting the same error messages.