I'm experiencing the same issue. I have the most recent version of Java (6, Update 32) and I've republished my course in Presenter and I still receive an LMS API error message. We have a license on a couple of computers and I'm receiving the error on the other computer as well. Any thoughts?
Grout needs between 48 and 72 hours to dry before it can be properly sealed. Despite the fact that grout often looks dry within a few hours, sealing it too early can damage the grout and keep it from effectively doing its job. Keep Learning.
How to Seal Grout. When you are learning how to seal grout, you want to make sure you go slow and that you cover the entire surface of the ground. Try to stay in the grout lines as much as possible. As mentioned earlier, you want to use a bottle roller applicator, or a bottle brush applicator.