On my Drupal 7 site, I noticed that the IMCE popup loses its action buttons and all functionality when I'm using Adminimal as the admin theme:
In the Known Issues section of the IMCE project page, it mentions using the ThemeKey module if there is a conflict with your custom theme. Here are the ThemeKey rules it says to write:
drupal:path = %token
drupal:path:wildcard token * imce
When I do this, the IMCE buttons are, in fact, back in place (yay!)... BUT the entire site, both public pages and administration pages, are also displayed in Garland (boo!).
How can I force just the IMCE popup window to render in Garland?