I changed into /opt/zimbra/wiki/Template and "mv Logo.gif ..", then ran the command again, this time no error:
[zimbra@mailhost Template]$ ls
Logo.gif _PathBodyTemplate.wiki _Template.wiki _TocBodyTemplate.wiki
_Footer.wiki _PathItemTemplate.wiki _TemplateStyles.wiki _TocItemTemplate.wiki
_Header.wiki _PathSeparator.wiki _TemplateStyles_unused.wiki
_Index.wiki _SideBar.wiki _TitleBar.wiki
[zimbra@mailhost Template]$ mv Logo.gif ..
[zimbra@mailhost Template]$ /opt/zimbra/bin/zmprov in
wiki@inc21.com 'ScrkWsgFEK' /opt/zimbra/wiki/Template Template
Initializing folders
Initializing...
Creating wiki page _Template in folder Template
Creating wiki page _PathItemTemplate in folder Template
Creating wiki page _TemplateStyles_unused in folder Template
Creating wiki page _TemplateStyles in folder Template
Creating wiki page _TocBodyTemplate in folder Template
Creating wiki page _PathSeparator in folder Template
Creating wiki page _Footer in folder Template
Creating wiki page _Index in folder Template
Creating wiki page _SideBar in folder Template
Creating wiki page _TitleBar in folder Template
Creating wiki page _Header in folder Template
Creating wiki page _PathBodyTemplate in folder Template
Creating wiki page _TocItemTemplate in folder Template
[zimbra@mailhost Template]$
Then if I log out as my own user and log back in, the wiki seems to be working.
Thanks for the help, but doesn't this seem to be a bug?