I wish you gave all the info first time round.
There is a good chance that the image is indexed. Sometimes a PDF will come from a 'fax' type tiff file .
Check the top of Gimp and if it says indexed then Image -> Mode -> RGB
If greyscale then the script brings up an error message (at least that is what happens here)
edit: What to look for.
There is a good chance that the image is indexed. Sometimes a PDF will come from a 'fax' type tiff file .
Check the top of Gimp and if it says indexed then Image -> Mode -> RGB
If greyscale then the script brings up an error message (at least that is what happens here)
edit: What to look for.