Do not see powerbanners on frontend
- Magento cache (or external cache) was not flushed after installation of the extension
- Some of the extension files were not uploaded or are broken. Re-upload original extension files to your server (overwrite existing files) and flush the cache
- You edited extension files and accidentally removed or changed something in the files. Re-upload original extension files to your server (overwrite existing files) and flush the cach
Blank page or 404 not found in admin
- Log out from Magento admin panel
- Delete all files in var/cache/ directory
- Log in again.
After extension installation the store gives blank page or an error
- Log out from Magento admin panel
- Change the owner of the uploaded files to the web server user and set correct file permissions for them
- Delete all files in var/cache/ directory
- Log in again
Extension configuration changes do not appear on the frontend
- Flush Magento cache in System > Cache Management
- Clear web browser cache/cookies for your store domain
- Refresh the page in your web browser