Security settings stopping Freewebs???

Okay, lets start from the beginning!

When I'm signing into my Freewebs account, and click onto my site manager
where I can edit my web pages etc, I keep getting a pop-up explaining there
is an error loading the files and if it persists I should contact the support
guys. Anyway, I spoke to them and one of their support people told me that it
could be caused from the security applications on my computer stopping
freewebs from loading in the necessary files.

So what I was wondering whether there is anybody who knows what I could do
to rectify the problem as I would really like to edit my website urgently!

It always used to work up until I had to reboot my computer from scratch,
and now freewebs just won't work. I'm beginning to regret staying up to date
and installing the automatic updates now.............