OSG Exporter - Texture seams somehow have alpha

[JvdBosch]

Originally Posted by shivanangel

Try moving your UVs a very small amount away from the corners to quick fix the problem.

There are no corners in the model. It's one big polygon. Within the polygon this happens.

Originally Posted by shivanangel

Also, did you make the original texture in Photoshop and resize the image?
Many times, the edges of images that are not flattened first are given a feathering at the edges, which can result in poor seams at the corners. Are you starting with a different format than jpeg, such as PNG or TGA which has an alpha channel?

Do you get the same problem when you change your compression type from DX to no compression? It looks at first glance like a compression problem from the image...

I used DXT1, which only has 1-bit alpha. The seams are clearly more than 1-bit alpha. The texture files are flat jpg/bmp files, with no alpha attached. This model worked fine in 3DS Max Design 2011...