Can't add file extension in Windows

[Howard Bornstein]

I'm running into a baffling problem when trying to export a jpeg file 
under Windows XP. I explicitly name the file with a ".jpg" extension, but 
the dot never appears in the filename.

Here's the code:

  put the short name of image 1 into imageName
    
  put ".jpg" after imagename
    
  ask file "Save the chart as..."  with gGraphDefaultFolder&"/"&imagename 
with filter "JPEG file,*.jpg"


Let's say that imagename="NewChart". The filename that appears in the 
directory save box is "NewChartjpg"

However, if I put this statement directly following the Ask File 
statement:

    put gGraphDefaultFolder&"/"&imagename

It prints out "<directorypath>/NewChart.jpg"

Why is the period being deleted from the filename in the Save dialog box? 
This works fine under the Mac OS, btw.

***New test***

OK, this is good. It turns out that if I add a period at the end of the 
filename (e.g. "NewChart.jpg." then the filename appears correctly in the 
Save dialog box ("NewChart.jpg"). The final period is dropped and the 
extension shows up correctly. On the Mac, the extra dot does appear. So, 
I can code around this, but my intuition is that this should work the 
same across platforms. Anyone have an idea what is going on?

Thanks,

Howard Bornstein
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