upload themes to Wordpress - they are blank

[brevia]

Been using Filezilla awhile w/no problems; suddenly, when I upload a theme to my Wordpress, the theme name is displayed but instead of a graphic, there is a black box, and it can't be activated.

Only thing I can think of is that while trying to figure out how to get Filezilla to show .htaccess I deleted a couple filters. I have uninstalled and reinstalled, but those deleted filters never show up. My original settings remain, even on a new install.

I'm stuck. Did search in the forum, didn't see anything; googled it, too; nothing

Help......

[boco]

Your complete settings are saved in %APPDATA%\Filezilla - delete that directory to reset to default.

Make sure the files are uploaded with the right transfer type (text files as Ascii, binary files as Image) and proper permissions are assigned.