So since it has been awhile, curiosity struck me in wondering if there has been any improvements. IOWs is there any way to display these geotiffs?
Any solution is going to depend on the library which gave you that error message (pixbuff, libtiff...), so I think you're better off asking their developers.

IOWs is there any way to display these geotiffs?
Try converting them, re-sampling ...

In reply to Re: 32 bit images using Pixbuf by Anonymous Monk
in thread 32 bit images using Pixbuf by deadpickle

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