Have finally managed to find a way around this, it seems very quirky though but hopefully this will be useful to someone.
First I gave my user administrator rights so that I can make changes without having to keep logging in and out as the administrator - Security, Access Controls, Right Click your access group and select update, context access, select your context (my is mgr) and set the policy to Administrator.
Now log in as your user.
Go to Elements, Template Variables and select your image variable. Then go to your Media sources tab, mine looked like the following although you may see Filesystem instead of 1 (As per below)
You will have to double click the 1 to change it. For some reason the first time you do this it won't let you select anything but do it again and your media source will appear and you can select and save as per below:
Now be aware!!!!!! Any image TV's that you have set a path for in your Media Source will
ALL disappear at this point. I confirmed this by looking at the MODX database under modx_site_tmplvr_contenvalues.
When you then go to your resource and look at the image TV's you will now see that the image path is selectable! You can then choose a path thats set out in your Media Source as per below:
As you can see the path for this image is now set as banner/residential.jpg instead of assets/image/dynamic/banner/residential.jpg as I believe is the initial problem.
You will have of course have to change every media source type in every image TV to the Media Source you want and set the path for every image in the resource and change your user policy back to what it was.
[ed. note: mflammia last edited this post 11 years, 4 months ago.]