Collection was modified; enumeration operation may not execute.
mscorlib
at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource) at System.Collections.Generic.List`1.Enumerator.MoveNextRare() at System.Linq.Enumerable.WhereListIterator`1.MoveNext() at System.Linq.Enumerable.Count[TSource](IEnumerable`1 source) at controls.Swatches.LoadColors(Product& p) at productinfo1.InitImage() at productinfo1.d__56.MoveNext()