Windows 7: Trying to Save System Image on Network Folder ???

Using AOMEI BackUpper, I am trying to save a System Image on the O/S of one machine to a folder that is on another machine.
All permissions and network access are in order.
When I navigate the path to the desired folder and click "Open", I get a notice "The specified path does not exist or is not writable; please select a writable path"
I know for fact that the path does exist.
I have complete full control of the target folder from the source machine.
I am fairly certain that I did this a couple years ago, saving to a different drive/folder on the same machine that I am trying to save to now.
Does anyone have any ideas ?
How can I make this work ?
Surely AOMEI has the capability to store images on a different network machine ?

Thanks for reading and all help is appreciated.

Have you mapped a drive to the location?

No; in fact I have never had any experience with mapping drives.

...To add some information to what is going on: When I am in AOMEI's "browse to a location" dialogue, and I go through the motions of selecting my target, AOMEI displays my path, step by step, in the path bar, and then refuses to accept it as a legitimate path/target.

Map a drive to it then it should work as long as everyone has full rights on the ntfs on the folder

Okay; mapping the network drive seems simple enough.
Once I map to the target folder, will I still be able to also access it by the original path or will that path now be broken ?

I "mapped a network drive" to the folder.
Now, I cannot for the life of me seem to type the path in correctly.
I cannot navigate to the network folder in the normal browse dialogue.
There is, however, a "Share/NAS" dialogue that AOMEI says to use for network folders.
I have tried every scenario I could think of and it refuses my efforts.
I Google-searched for answers as to how the path should be typed and came to a dead end.

Did you try typing in the UNC path ?

Pathcopycopy is neat little program that adds to context menu for copying all sorts of paths:
Path Copy Copy

I vaguely remember seeing reference to UNC in my internet searching; how do I determine the UNC path and how to properly type it ?

Thanks for the Path Copy Copy link; I will check it out.

If you have mapped a drive its simple save to the mapped letter ie k:

Thanks; I tried that again and no go.