8.1 WLM Cannot delete emails

Hello,

I've recently built a new PC and installed Windows 8.1 and Windows live mail 2012. I'm also running the standard windows firewall and antivirus. My last PC was running Windows 7, WLM and my hotmail.com email account without any problem.

On initial setup of WLM I added my hotmail account by filling out the IMAP details. Once all my emails had downloaded I saw I had duplicate folders so I removed and re-added the account using the standard email address and password. All my emails downloaded OK and I was able to send and recieve without any problem, but I was missing my 'sent' folder. I then changed the email location folder to my secondary drive, and again still had access to all emails. I tried to delete some messages in my inbox but pressing the delete has no effect. Any ideas?

I've tried uninstalling live, cleaning the reg using ccleaner, restarting and then reinstalling. Restoring default settings, deleting the live folder under USER and using another folder for the email storage. I've also deleted emails using the web-based hotmail account and the changes appear in WLM.

Any help would be appreciated.