RemoteApp cant seem to write to Program Files (x86)

I have a (old) ERP system setup as a RemoteApp.

When you go to spool invoices etc and display them, it goes to generate them, brings up WordPad but then comes up with the following message:


"\\ServerFQDN\c$\Program Files (x86)\Application Folder\Sub Folder\Filename.txt

Cannot find this file

Please verify the correct file name and path are given."

It has never written the file.

If I open WordPad as a RemoteApp and manually browse to that location I have full access and create and modify a file there so I dont believe its a permissions issue.

Any advice would be greatly appreciated.