One other thing to check, could you load up the PHP Info script in the UBB.threads control panel and let us know the version of GD your host is using? It should be something like:
GD Version bundled (2.1.0 compatible)

UBB.threads can have issues with GD 2.1, which is quite a common build on most hosts. This issue will be fixed in 7.6.0, but you'll see far better results with running ImageMagick if your host has it available (your images will be far "crisper").

I am a Web Development Contractor, I do not work for UBBCentral. I have provided free User to User Support since the beginning of these support forums.
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