Error when trying to install 2.5 template

I am trying to install the template version 2.5.

I have unzipped the file I downloaded and through the Joomla backend have tried to upload the template package via the Extension Manager. However, I keep receiving the following error message "There was an error uploading this file to the server"

I have been able to upload other templates without problems. Am I missing something?

Thanks

Hi,
In extension manager, please upload the file "mega_cleanity_template_install_package_j2.5.zip".
You also need check the /tmp folder path in your configuration.php is correct and it must write-able.

Thanks