If you require to disable the extension without removing it completely, go to System > Configuration > Advanced > Advanced > Disable Modules Output and disable the module Nwdthemes_Ultratabs
If you want to completely remove extension, follow these steps:
- Disable compilation, in case it is enabled. ( System > Tools > Compilation )
- Login to your FTP, navigate to
app/etc/modules/
- Open the file Nwdthemes_UltraTabs.xml and change the following line:
fromtrue to
false - Clear the cache under
var/cache
- Make sure that the site is working properly
- If everything works fine, it is safe to delete the files of the extension.