Photoshop styles (.asl) can be applied to objects or layers in a picture opened using the program but cannot be actually converted to a graphics file.
Which means that asl to jpg conversion is impossible to do unless you would export a picture altered by the style to JPEG, but for this you need to check psd to jpg conversion entry.
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.
