I see
I'm sorry it's so complicated
Could you open the gtkrc file which is inside /home/user/.themes/MinimumBlack/gtk-2.0/ with a text editor ?
If you do so, starting from the line 1676 you should see this :
# This prevents Sodipodi from crashing while opening the
# Object-Style dialog.
style "unstyle"
{
engine ""
{
}
}and maybe if you add "pixmap" this way :
# This prevents Sodipodi from crashing while opening the
# Object-Style dialog.
style "unstyle"
{
engine "pixmap"
{
}
}and save it, you could get the theme to work. I can't tell for sure, but that seems rather logical
If it works, just report it to me, and I'll update the theme