Cannot update Easyblog

I have updated my Easyblog subscription but when I go to Easyblog updater on my site it stalls on 20% and says:
MD5 checksum for downloaded file does not match ...

What can I do. My account gives me 3 download options for the updated Easyblog - not sure which one to use. Will manually updating Easyblog delete my previous posts?

Thanks

Ian