Asked to have permission in saving file

I copied to an image editor a file from the net. When I was done editing and tried to save it to my folder I cannot make it and told I do not have permission to save it the desired location.
This is totally puzzling because I have no problems before saving to this folder.
Am I having some sort of virus infection or what?
Please help.
Thanks.
Save As
D:ABC.bmp
You don't have permission to save in this location.
Contact the administrator to obtain permission.
Would you like to save in the Pictures folder instead?

