Export as JPEG can produce a format unaccepted by other photo tools

[Wilhelm Sanke]

The Rev docs list two ways to export an image as JPEG - when not using 
"export snapshot", namely

export JPEG to URL "binfile:next.jpg"
export image thisImage to file "Thumbnail" as JPEG

The Metacard docs list another variant with

"export jpeg to file tFilename"

To use the two variants beginning with "export JPEG" you need to select 
the image first.

All three variants produce JPEG files that can be re-imported or opened 
within Rev, however only variant

"export image "x" to file "y" as JPEG"

produces a file that can be opened by Photoshop or PaintShopPro.

The other two trigger  error messages like  "not a valid JPEG-JFIF file".

 Is this a bug or am I missing something?

--Wilhelm Sanke
<http://www.sanke.org/MetaMedia>