If you've followed the link supplied by Anonymous, then you've run the test script for version 1.20 of the module. But you probably have an older version of Image::OCR::Tesseract - one that apparently doesn't define the tag "all".
Any chance that you can update to the latest version of the module ? Looks like it's a pure perl module, so this is probably as simple as grabbing Tesseract.pm from
and sticking it in your perl/site/lib/Image/OCR folder (overwriting the existing Tesseract.pm).
Then try the test script again. (That test script might need to be able to locate other files from the source distro - you can get the entire source distro from