We have just identified a problem with a portal in an installation that was recently upgraded from 7.1.1 to 7.2.1 but can't be definite that the problem is due to the upgrade because it wasn't noticed until recently.
When using the Insert Media or Document Manager functions from within the text editor the window is empty and doesn't display any of the existing files or allow new uploads.
This only affects the first portal and no others.
The problem is present even when logged in as host.
The file manager still operates normally.
The media manager button on the text editor tool bar still works normally.
We have tried using the default skins and it makes no difference.
Other text editor functions such as creating links etc still work fine.
Any suggestions as to what could be causing this are welcome.