Known issue. A correction is being worked on.
Sorry for the trouble.
A workaround is posted on the Mma stack exchange:
http://mathematica.stackexchange.com/questions/56132/plotmarkers-problem-in-errorlistplot-mathematica-10
In my experience, the workaround
Method -> {"OptimizePlotMarkers" -> False}
has to go before the PlotMarkers option.
PlotMarkers
I verified it on windows. I do not know if this is a bug or a new feature though.
