1D III error 99

[Fast Glass]

Need to get my computer going, its windows 8 and a POS. It doesn't want to install any kind of photo editing software what so ever. Not even DPP.

Well, my enthusiasm was short lived. It's doing it again! Although its WAY better. Right now it usually returns to normal after restarting it once or twice. So maybe a lens thing? I know my 28-135mm if banged up and won't focus to infinity below 50mm and sounds like like there is something small rattling in it.

So maybe the lens is causing it to get screwy. It's still very ussuable now. Just something I need to track down.