MicrostockGroup

A while back I had a rejection at Veer that was particularly unhelpful.  The reason given was " Improper image editing."  I haven't a clue what this means, particularly as the same image has sold several hundred times, cumulatively, on other sites, including one EL.  Has anyone else received his rejection reason and does it have a particular meaning?  If the reviewer actually saw some problem area, I'd love to know what it was so I could fix it and perhaps gain even more sales.