e-mail picture wizard
That happens because some information is missing in the Registry. Don't ask me why the information dissapears.
If you know how to edit the registry, it easy to solve this problem.
Run regedit
When the Registry Editor appears, click the plus sign next to HKEY_Classes_Root.
Scroll down until you find the extension of the file you are trying to email.
Highlight that extension.
On the right side panel you are probably missing the Perceived Type, which should be image.
If that is missing, highlight the file extension on the left, then click:
Edit>New>String Value
Type PerceivedType and press Enter.
Double click on PercivedType and in the value data type image
Click OK
If the Content Type is also missing, repeat the procedure just typing Content Type in the first case and image/jpeg (or whatever the extension is.
Close the registry and the problem should be solved.
Don't forget to backup your registry before you edit it.