Over the last few months there has been many reports where users are receiving Server Errors 305. This is caused due to timing out errors with the server. But to get around this problem, all you need to do is follow these very quick instructions below:
Note: This is for all Plugins/Upgrade packages.
This error is due to the limitations in your host’s php.ini file. To overcome this limitation, Upload your .tar archive to /temporary/package/archives and CHMOD it to 0777.
Now, go to the admin panel (/install/manage/select) and continue with the steps.
That’s all guys!