So, on a couple of my stealth accts, I have ran into a problem with printing my labels. I select print postage, then it takes me to the label screen. But then it says I have errors with my certificates and it cannot run the application.
I went to java config, security, and set to medium on the first account, then the other labels printed off fine off that acct. When I just tried on a diff acct, it was not as successful.
problems with printing shipping labels off EB 
