On December 2, 2011 at 4:10 pm
I had the same problem. I went through wordpress- upload themes and uploaded the .zip. When I tried to activate it it said “Style sheet missing”. (stilmall saknas in swedish).
I read this entry and tried to go through FTP. Check your webhost for your FTP account. (my webhost is loopia)
After logging into the FTP client I went into my weppages files wp-content then .themes
There I deleted both scylla lite and pro.
I then extracted the folder (winxip extract) to my desktop.
In the FTP client I marked the folder from my desktop and dragged it to the themes folder. (i.e. I uploaded scylla pro through FTP).
My FTP client says that it was a sucess (I use filezilla).
I then went to my wordpress admin page and in themes the scylla pro is now in the listing. I press activate and TADA!
It works.