I get the "Property Images does not exist" for an old project that I opened today with Delphi Tokyo 10.2 Trial.
How to (re)produce it:
Select multiple controls on a form (at design time). At least one of the controls needs to have an 'Images' property. For example, I select with Shift+Click a TLabel and a Tbutton.
For the button I see its 'Images' property listed in Object Inspector. And it seems to work ok: I can assign a list of images to it.
So, what is the actual problem? Why do I see this error (ONLY when I select multiple controls)?
[5011EB3F]{rtl250.bpl } System.TypInfo.PropertyNotFound (Line 1126, "System.TypInfo.pas" + 1) + $21
[5011EBEA]{rtl250.bpl } System.TypInfo.FindPropInfo (Line 1160, "System.TypInfo.pas" + 3) + $6
[5011ED11]{rtl250.bpl } System.TypInfo.GetObjectProp (Line 1210, "System.TypInfo.pas" + 1) + $8
[157A850D]{dclQuickEdit250.bpl} Quickedit.TQuickEditor.GetVerb + $1FD
[157A8729]{dclQuickEdit250.bpl} Quickedit.TQuickEditor.PrepareItem + $E1
[525BE924]{vcldesigner250.bpl} VCLSurface.AddSelectionVerbs (Line 2717, "VCLSurface.pas" + 15) + $14
[525BEB8B]{vcldesigner250.bpl} VCLSurface.TVclDesignSurface.BuildLocalMenu (Line 2771, "VCLSurface.pas" + 9) + $1
[21F6AA6C]{delphicoreide250.bpl} PropInspManage.TDesignerPropSelection.GetHotCommandMenuItems (Line 331, "PropInspManage.pas" + 3) + $13
[21F6BCF7]{delphicoreide250.bpl} PropInspManage.TDesignerPropSelection.UpdateHotCommands (Line 690, "PropInspManage.pas" + 2) + $C
[21F6B602]{delphicoreide250.bpl} PropInspManage.TDesignerPropSelection.SelectionChanged (Line 597, "PropInspManage.pas" + 15) + $2
[2120B4DF]{designide250.bpl} ComponentDesigner.DesignNotificationSelectionChanged (Line 8832, "ComponentDesigner.pas" + 5) + $A
[21206B24]{designide250.bpl} ComponentDesigner.TComponentDesigner.SetSelection (Line 7021, "ComponentDesigner.pas" + 20) + $5
[212070AA]{designide250.bpl} ComponentDesigner.TComponentDesigner.UpdateSelections (Line 7089, "ComponentDesigner.pas" + 19) + $C
[21206841]{designide250.bpl} ComponentDesigner.TComponentDesigner.RootActivated (Line 6941, "ComponentDesigner.pas" + 5) + $2
[525D04A2]{vcldesigner250.bpl} VCLFormDesigner.TVCLRootDesigner.Activate (Line 344, "VCLFormDesigner.pas" + 4) + $1E
[525C0BB6]{vcldesigner250.bpl} VCLSurface.TVclDesignSurface.IsDesignMsg (Line 3584, "VCLSurface.pas" + 114) + $A
[5005FBA2]{rtl250.bpl } System.@IsClass (Line 17427, "System.pas" + 1) + $8
[50AC499B]{vcl250.bpl } Vcl.Controls.TControl.WndProc (Line 7239, "Vcl.Controls.pas" + 4) + $21
[211AEFCA]{designide250.bpl} DeskUtil.SetFocusHook (Line 463, "DeskUtil.pas" + 4) + $C
[50AC97FB]{vcl250.bpl } Vcl.Controls.TWinControl.WndProc (Line 10197, "Vcl.Controls.pas" + 166) + $6
[50AC8DC8]{vcl250.bpl } Vcl.Controls.TWinControl.MainWndProc (Line 9896, "Vcl.Controls.pas" + 3) + $6
[5016EBC4]{rtl250.bpl } System.Classes.StdWndProc (Line 17406, "System.Classes.pas" + 9) + $2
[50C119C7]{vcl250.bpl } Vcl.Forms.TApplication.ProcessMessage (Line 10596, "Vcl.Forms.pas" + 6) + $9
[50C11AB2]{vcl250.bpl } Vcl.Forms.TApplication.HandleMessage (Line 10643, "Vcl.Forms.pas" + 1) + $4
[50C11DE5]{vcl250.bpl } Vcl.Forms.TApplication.Run (Line 10781, "Vcl.Forms.pas" + 26) + $3
[005088E2]{bds.exe } bds.bds (Line 212, "" + 7) + $7
