When you are installing OptimizePress, if you get an error like:
"Unpacking the package…"
and then WordPress hangs on this - its likely that you have a problem with your WordPress installation or Hosting account.
Unfortunately, these issues are not down to OptimizePress but actually an issue with your hosting or due to an incomplete WordPress installation, so you need to check with your web host or webmaster to check your installation and get that fixed first.
We have also found some people using free hosting providers have this problem. Sometimes this can be resolved by using FTP upload rather than installing via the WordPress Dashboard, but we always recommend using a professional host like Hostgator to host your websites