I had a similar problem with my BT/Yahoo Browser, my bookmark icon was disabled....but I over came the problem by adding bookmarks as a content to my homepage....I don't know if Internet Explorer will allow you to add your bookmarks as content.
Anyway, all my bookmarks were still there and are now accessible.
I'm sorry if this does not help you to solve your problem.
No, not tried that. Please excuse my ignorance, but how would I export them? When I click on Bookmarks, the 3 options (Add, Edit, Import) are all grey.
have you signed in to your google account? My bookmarks are only accessible if i am logged in to the correct google account - if im not logged in it says 'sign in' at the top right of my browser