gnome-splashscreen-manager, part of gnome-extra/gnome-art, has an incorrect .desktop file. Specifically, it is set: "Terminal=true". This is incorrect and causes an error "Details: Failed to execute child process "gnome-terminal --working-directory=%f" (No such file or directory)". Easily fixed by setting "Terminal=false".
Created attachment 82590 [details] Proper desktop file.
wow, must have missed this bugs, just found it when grepping through old bugs. fixed now, sorry it took so long