Only Admin can see field image

[DCD.RB]

I'm having the strangest issue, so I went back to using just the simplest code from here:
https://vborg.vbsupport.ru/archive/i.../t-118896.html

<if condition="$post[fieldx]"><div class="smallfont">Label for image: <img src="$stylevar[imgdir_misc]/$post[fieldx].gif" border="0" alt="$post[fieldx]" /></div></if>

Replacing fieldx with field30, a new test field.

While using it on testing account, the admin account can view it working properly. But even with a Mod & other user accounts, they do cannot see the image displaying.

I'm using the same condition for other image codes, and they work fine. But all of a sudden this only works for Admins? What am I missing?