Invalid spatial reference

Discussion created by slav039 on Aug 31, 2011
Latest reply on Aug 31, 2011 by MKennedy-esristaff
error: Invalid spatial reference. Spatial reference must match map's spatial reference. Clear the map layers collection prior to chanching the spatial reference.

it happens only if i using Tiled map service.. during navigation. With Dynamic services everything is ok.

any ideas why could be this happen?