My VB .Net app has a reportviewer on two forms - the export (XLS,.. etc) works fine on one form but not on the other (which displays message '... attempted to access an unloaded appdomain'.) The major difference in the two implementations is the
one that works has an mdiparent and the form that fails to export does not have an mdiparent. Both perform functions as expected re data display and print.
hpw