2011.06.15 09:25 "Re: [Tiff] bug in G4 encoder.", by Erik Thiele

2011.06.15 05:22 "Re: [Tiff] bug in G4 encoder.", by Lee Howard

there is a bug in the G4 encoder. attached to this email you find a file "gimpcrop.g3.tiff". it is a correct TIFF file encoded with G3. you can open it with the usual viewers.

now do this:

tiffcp -c g4 gimpcrop.g3.tiff out.tiff

the file gets converted from G3 to G4. the following command shows that the output file is corrupted.

tiffcp out.tiff lala.tiff

I cannot reproduce your problem with 4.0.0beta6.