I recently made a simple model and applied the texture and stuff. The texture looks good both in XSI and in Zero Editor, but ingame it looks like this: Below is how the texture is supposed to look: Here's a picture of the model's wireframe: Only that face and another one on the other side have this problem.

Could someone help me with this?

Could you please do the following in XSI?

1. Press 8 to bring up the Explorer
2. Expand your object's tree by clicking the little plus icon
3. Expand the Poly Mesh tree
4. Expand the Clusters tree
5. Expand the Texture_Coordinates (or whatever) tree
6. Take a screenshot of the Explorer window and post it here

P.S. That texture looks really, REALLY good, by the way.

Here is the Explorer: I just didn't expand the Texture_Projection (Explicit UVWs) section because it had a really big bunch of MoveComponents, like, ranging from 1 to 551 (really). In the section there were also a few Dissolve Component thingies, two or three Quadrangulate thingies and one PolyPackUV.

You oughta freeze your UVs, to start with. I'd like to see a screenshot of your texture opened in the (XSI) UV editor as well (Alt-7).

I don't know how to freeze UVs. So far I've only found the button for freezing transforms.

And here's a screenshot of the UV Editor:

Freeze is found in the lower right hand corner

You mean a small, slightly rounded, squared button with a lock icon?
I tried it. No difference.

It should be a button that says Freeze. Next to it is a button that says Freeze M. It is under the Edit section.

Sorry but I seemingly can't find it . Could you post a screenshot pinpointing the button's location?

Ohhh, your monitor's resolution is probably too small to display all of the buttons.

See here: viewtopic.php?p=501299#p501299

Oh yeah, that's problably the issue with the button.

Back to the topic, the link posted by Marth mentioned about Freezing the Operator Stack. I tried this as well, but the texture was still messed up ingame. I feel like I'm running out of options...

EDIT: Tried a manual clean but no luck either.

I'm pretty sure your UVs are too far out-of-bounds. I see this error all the time when a UV map stretches too far from the origin (which is why you're seeing it on the extremities). It's not a model error, it's an issue with SWBF2 and how it reads UVs (for example, I don't think you'll see the error in simple mesh viewers).

Arrange your UVs something like this: And I think you'll have better luck.

That solved the problem! Thanks a lot Mav.

EDIT: Just another little request. I'm still very clueless about many things, like materials, flags, what being a child of something means, what are clusters, etc. If someone could post a few links to pages where basics such as these are explained I'd be very thankful.

Materials and flags: http://www.gametoast.com/viewtopic.php?f=36&t=27355 & http://www.gametoast.com/viewtopic.php?f=27&t=24851
Clusters: http://download.autodesk.com/global/docs/softimage2012/en_us/userguide/index.html?url=files/components_Clusters.htm,topicNumber=d28e42504
Hierarchy structures: http://download.autodesk.com/global/docs/softimage2012/en_us/userguide/index.html?url=files/3dexplorer510.htm,topicNumber=d28e14666

Thanks Marth.