I got a tiled dataset from a client, consisting of 8 jpegs + jpw's. These are used in a .vrt, and I get the following error: "IReadBlock failed at X offset 0, Y offset 73".
I get the same errors when testing the .jpegs individually aswell. When stepping into the GDAL code, I can see that the first band is being read, while the second (green) fails. I didn't go any further. When opening them in GIMP, and saving back, they work fine. GDAL version is 1.8.0. Here is a sample dataset that fails: https://dl.dropboxusercontent.com/u/32561725/data.tgz - Oyvind
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