As for popsicle, there's a little error in it so it won't install properly. What you can do is edit the theme.rc (yes, inside the archive) and remove the spaces at the beginning of the lines that read

otsmajorversion 2
otsminorversion 0

and just save the file to the archive again. Or, you could simply wait for the next beta version which will be available tonight or tomorrow :)

As for nonstep 1.11 I think that's a pretty old version of the theme (IIRC the newest version is 2.something) and you should try getting hold of a newer one.

Can't help you with Ghost though, never used that theme...