I've tested Firestorm 7 on my tower with dedicated graphics on grids running various OpenSim versions from OSgrid's 0.9.3.0 to ArribaSim FreAki which is partly still 0.8.x.x at its core. It worked everywhere.
On the other hand, on my laptop with on-board graphics, Firestorm 7 had a hard time loading an avatar. The debug console claimed it failed to download certain surfaces (Error 503), and the avatar stayed cloudy until I removed all attachments and replaced all textures with plain white. The surroundings worked. That was on 0.9.2.0, and my tower works just fine on the same sim on the same grid with the same avatar.
Both machines run Debian testing.
So it could be a client-side issue, but even that is still mysterious to me. If you could tell me a sim I could visit for a test, I'd do so with the tower and see what happens.
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