I read your post about wanting to change your preferences on the user control panel, and that you were having trouble doing so. Go to User Control panel, then click the third link from the left "edit options". From there scroll down to the second set of options "Messaging & Notification". Scroll down to where it says "allow Private Messages" and change to 'yes', and same with email option if you chose to change that too. You shouldn't have any problems after that, and it allows PMs to go through etc.