add exception msg to cleanup error

Author: bronsolo

plotly/plotly_setup_aux/plotlyupdate.m

@@ -278,7 +278,7 @@ function plotlyupdate(varargin)
                     end
                 end
             catch exception
-                fprintf(['\n\nAn error occured while cleaning up the outdated Plotly scripts. Please\n',...
+                fprintf([exception '\n\nAn error occured while cleaning up the outdated Plotly scripts. Please\n',...
                     'check your write permissions for your outdated Plotly directories with \n',...
                     'your system admin. Contact [email protected] for more information.\n\n']);
             end