Update image filed using Adobe Dreamweaver developer Toolkit

["kid ron" <webforumsuser@xxxxxxxxxxxxxx>]

I am using the ADDT and have a form where I upload an image file to a database, 
works perfect. When I try to use an update form to make changes, I can change 
all the information, except the image. When I try to upload a new image to 
re[place the image, I get the following error

 Microsoft VBScript runtime error '800a000d' 

 Type mismatch 

 /admin/edit_invent.asp, line 0 

 I am using Access as the back end

 Any thoughts on this issue? 

 Thanks

 Ron