AdvStringGrid upgrade error

Hi,
I have just buy and upgraded TMS component 8.8.5 to VCL UI Pack lastest version.
Uninstalled component and then installed UI pack in 10.1 berlin win 10.
When I open my project I see several missing proprieties error and at the end the "Error creating form: No mapping for the Unicode char exixst in the target multi-byte code page."
I have also searched for new TMS component but in the subsciption manager and also in myproduct i'm not able to find any tms component download.
What can i do?
thanks!

We are not aware of issues. With a clean setup, it should be fully backwards compatible.
What exactly is "several missing properties"?

AdvTreeView.GroupsAppearance.TopFill.Kind
AdvTreeView.GroupsAppearance.BottomFill.Kind
AdvTreeView.GroupsAppearance.TopFontColor
AdvTreeView.GroupsAppearance.BottomFontColor
AdvTreeView.ColumnAppearance.TopFontColor
AdvTreeView.ColumnAppearance.BottomFontColor
AdvTreeView.ColumnAppearance.TopFill.Kind
AdvTreeView.ColumnAppearance.BottomFill.Kind
AdvTreeView.NodesAppearance.Stroke.Style
AdvTreeView.NodesAppearance.LineStroke.Style
AdvTreeView.NodesAppearance.FontColor
AdvTreeView.NodesAppearance.SelectedFill.Gradient.Color
AdvTreeView.NodesAppearance.SelectedFill.Gradient.ColorTo
AdvTreeView.NodesAppearance.SelectedStroke.Style
AdvTreeView.NodesAppearance.DisabledStroke.Style
AdvTreeView.NodesAppearance.ExtendedSelectedStroke.Style
AdvTreeView.NodesAppearance.ExtendedDisabledStroke.Style
TAdvTreeViewColumn.GroupsAppearance.TopFill.Kind
TAdvTreeViewColumn.GroupsAppearance.BottomFill.Kind
TAdvTreeViewColumn.HorizontalTextAlign
TAdvTreeViewColumn.TopFill.Kind
TAdvTreeViewColumn.BottomFill.Kind
TAdvTreeViewColumn.HorizontalTextAlign
Trv.Version: Property is read-only

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This is a fresh installation of windows and then RAD studio

This is not about TAdvStringGrid but about TAdvTreeView.

TAdvTreeView was redesigned and changes are needed, it mentioned here:

Information and tips to address this are here: