No problems here man. I'm still with the same rank, and without problems with units production. I haven't update my java for months or so... However try to delete it with all supremacy data, and then download and instal it again, sometimes that can help.
Btw, do not forgot to inform sup. mods about that, at this link http://www.supremacy1914.com/index.php?id=172 and explain them your problem.