Liberty Theme Help

[J88R]

Hey guys and girls,

So I have tried to get a theme onto my Droid 2 going through the
Liberty Toolbox -> Liberty Mods -> Install Themes -> Big DX Crystal

So I clicked on it from there and every time it says Installation Aborted
Right above it I see
E: Cant open /sdcard/liberty downloads
(Bad)

something like that.

Anyways, is there a certain way to do this correctly or am I missing something? Thanks in advance for the help.