Hi,
I also have the same problem with Gallery version 3.0.12 on DNN 4.8.
Clicking on a flash file produces the following error:
Error: FlashPlayer is currently unavailable.
DotNetNuke.Services.Exceptions.ModuleLoadException: The file '/DesktopModules/Gallery/FlashPlayer.ascx' does not exist. ---> System.Web.HttpException: The file '/DesktopModules/Gallery/FlashPlayer.ascx' does not exist. at System.Web.UI.Util.CheckVirtualFileExists(VirtualPath virtualPath) at System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) at System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) at System.Web.UI.TemplateControl.LoadControl(VirtualPath virtualPath) at System.Web.UI.TemplateControl.LoadControl(String virtualPath) at DotNetNuke.UI.Skins.Skin.InjectModule(Control objPane, ModuleInfo objModule, PortalSettings PortalSettings) --- End of inner exception stack trace