I hate to necro an old thread, but I found something that may be of use to this issue. I mentioned in earlier posts about the possibility of overriding the GL_CLAMP call. I discovered that something people were recommending to fix K1's grass issues also has the ability to do this.
GLOverride - http://www.humus.nam...?page=Cool&ID=5
If anyone with the black line issue would line to test this, grab the file from the above link, extract to your K1/TSL folder, open opengl32.ini in a text editor and changeFixClamp = 0to
FixClamp = 1I'm unable to test it myself. The one instance where I noticed a similar problem was on an XP machine, but the GOG version crashes on XP using that DLL.
I haven't played Kotor for a while , so I only just saw this now.
I tried it and it completely removed the line from Mission's face.