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.
1- How long should we let the tile and thinset sit before grouting? If you are using basic 12 x 12 porcelain field tile and bagged thinset mortar, wait 8 to 12 hours before grouting. - How long should we let the grout dry? You said you used a non-sanded grout, and if you got it from us, it should look something like this.... Polyblend non-sanded grout typically dries in 6-7 hours. The thinner the tile spacers you put in, the faster it will take the grout to dry.