Although both .art and .aeb files seems to be used by Alphacam CAD/CAM software for the woodworking industry, a conversion between art and aeb files or even vice versa seems highly unlikely. It appears that both of these file types are used for completely different purposes and are not compatible.
This conversion entry was verified by us and conversion was flagged as wrong or not possible.
Usually this happens when the conversion would try to convert different types of data between each other, such as audio to image, or it is not possible because incompatibility between programs, caused by closed file formats, very limited support etc.
If you find entry that you feel is flagged as bad wrongly, please tell us in the discussion below with as much as information as possible so we can fix it.