I have used the Weaver theme on several of my sites with no issues. When installed on this site: http://www.reneerox.com, I received an FTP error:
*** Weaver File Access Error! *** (But don't panic!)
Weaver is unable to process a file access request. You may have incomplete or incorrect FTP credentials set in the Advanced Options:Admin page, or in your wp-config.php file. Otherwise, it is unusual to see this error. It often is generated after you move to a new host, or switch between the Weaver File Access Plugin and FTP File Access.
You may have to change the directory permissions on your web hosting server. See Weaver File Access Plugin Help for more information.
Diagnostics: Unable to create directory. Probably a file system permission problem. Directory/home/reneeandtate/www/www//home/reneeandtate/www/www/wordpress/images/weaver-subthemes
*** IMPORTANT NOTICE! *** (But don't panic!)
Your web host configuration needs "FTP" file access for full Weaver functionality. You need to use one of the following options. There are more details in the help file.
•For a shared web host: Provide FTP credentials to enable file access. You can do this by filling the form below, or by adding the proper information to your wp-config.php file as described in the help file. Note: most shared hosts do not need FTP file access, and won't generate this message.
•For a private server or VPS: Provide FTP credentials, or install the Weaver File Access Plugin. The Weaver File Access Plugin will provide the required file access with the most efficiency.
•For compatibility with existing Weaver installations: install the Weaver File Access Plugin. This will provide the required file access with the most compatibility with previous versions, but with a very small security risk. See the help file. If you have an existing Weaver installation, you may find switching file access methods (Weaver File Access Plugin to FTP, or the opposite) may result in file or directory access permission issues. See the help file.
For reduced functionality mode: Check the Hide FTP Access Start up Dialog below. Weaver will continue to operate in reduced functionality mode (no editor styling, no save/restore, Inline CSS) until you provide FTP credentials, or download and activate the Weaver File Access Plugin, either from WordPress.org, or WPWeaver.info.
•If your host requires secure FTP or SSH access, you will need to provide the proper credentials using the wp-config.php file.
•Installing the Weaver File Access Plugin will allow full Weaver functionality on any host, but sometimes with a small security risk
Please read more details in the Weaver File Access Plugin topic from the Weaver Help tab.
When I installed the plugin the error went away and I was able to access the Weaver Admin, however none of the subthemes show up or uploading backgrounds or headers.
I don't know what caused the problem to begin with but I wonder if it has to do with this part of the error:
at one point, I changed domains from reneeandate.com to reneerox.com