Slow load times, missing weather effects: related?

[Jimjam]

So, I am having larger load times and other problems, including missing weather effects.

I found the logs/dbg.txt file that seems to include a lot of debugger information.

There are a lot of lines in this file along the lines of:

D3DXCreateTextureFromFileEx() failed to create texture spelab.tga for particle system.

These occur for many .png, .tga and .dds files.

I have checked a bunch of these file names, and they all seem to exist within the spelleffects file, etc.

Are these errors symptomatic of anything I could fix?