Doing some worldbuildering, when i hit the reveal tile button, bizarre things happen to the graphics. It seems different every time, i mean REALLY different. The first time it was just glowing purple coastal tiles, quit, restart, then something totally different happens; blacked out tiles, blurring, static, you name it. I can save the game and quit out, then reload and everything is fine, so no point in posting a save game, but here's some screenshots:
1st one, the whole screen became a big minimap, notice the giant units:

Then the same game when i exited WB:

And one more to show the randomness:

The only "mod" i have on is i changed my GolobalDefines XML to have 5% tech slider increments, not 10%, but i'd be real surprised if that was the culprit, and the version is BTS 3.19
Again, the saves come out fine, so i can just save the game and quit to desktop, reload and the changes i made in worldbuilder are still there, everything is good. And since all i'm doing is unrevealing all tiles for a civ i've moved, it's not a real issue since i can do that, save, and quit even while the graphics are all screwy, but is is annoying.
I've been running CIV on this computer for a few months with no problems, all graphic options on high detail, can run huge maps through the modern age with no real lag, so i don't think it's a spec thing. I have a 3.4GHz Pentium 4, 2GB of RAM, and a Nvidia GE Force 9500 GT.
Never had any issues with the reveal tile mode before (on this machine), any ideas?
1st one, the whole screen became a big minimap, notice the giant units:

Then the same game when i exited WB:

And one more to show the randomness:

The only "mod" i have on is i changed my GolobalDefines XML to have 5% tech slider increments, not 10%, but i'd be real surprised if that was the culprit, and the version is BTS 3.19
Again, the saves come out fine, so i can just save the game and quit to desktop, reload and the changes i made in worldbuilder are still there, everything is good. And since all i'm doing is unrevealing all tiles for a civ i've moved, it's not a real issue since i can do that, save, and quit even while the graphics are all screwy, but is is annoying.
I've been running CIV on this computer for a few months with no problems, all graphic options on high detail, can run huge maps through the modern age with no real lag, so i don't think it's a spec thing. I have a 3.4GHz Pentium 4, 2GB of RAM, and a Nvidia GE Force 9500 GT.
Never had any issues with the reveal tile mode before (on this machine), any ideas?