Rockbox

I think I best explain it by example:

You want to open file a with viewer b, so you long-click select on a und browse the viewer plugins.
While browsing you notice the obsolete plugin c and want to delete it, so long-click select on c and delete.
However instead of plugin c you have now deleted file a.
Ooops.

I think there shouldn't be a context menu when you select your viewer plugin, although in the given example it would have be convenient (if it worked).