Quoting Kane Sagar
Have you just finished, adding and typing about a new LEGO creation and you really want to upload it then the computer tells you to re-login? And then you find out that you have to start the MOC all over again? Well that happens to me a lot and it annoys me a lot. But i have a solution to that.
First upload all of your pictures that you need, and type up the title of your creation, then place it in it's directory. Then press continue and click create this new page. Go into the page where your creation is the press edit. Begin typing about your awesome MOC and press continue. This should go to "preview of your page" and then press "done editing". Yhis shoukd clear everything up with force logins! I hope this helps a lot! :D
your connection has timed out. Best way to avoid this is to prepare everything off line first. Cut and paste all your HTML code into MSword or some other word processing programme, then go back into MOCpages, if it clears everything out, just paste it back in and continue again.
You may need to upload another thumbnail and re add the heading, but everything else will be ok.
alternatively, save it in stages, I always save the pictures first, then go back and edit to add a description.