Hello alvarocan you try with P9 because we got many improvements.��SOn 18 Sep 2020, at 22:07, Alvaro Piorno <alvaropiorno100@gmail.com> wrote:Hello,This code that worked for P6 and P7 is now failing in P8.AthensCairoSDLSurface fromSDLSurface: self window handle handle getWindowSurface.the window is created like this:window := OSWindow createWithAttributes: (OSWindowAttributes new resizable: false; yourself).The exception is Error: Could not coerce argumentsfrom cairo lib.Cheers--------------------------------------------St��phane Ducasse03 59 35 87 52Assistant: Aurore Dalle��FAX 03 59 57 78 50TEL 03 59 35 86 16S. Ducasse - Inria40, avenue Halley,��Parc Scientifique de la Haute Borne, B��t.A, Park PlazaVilleneuve d'Ascq 59650France