Hi madeno
The GUI for Tinycore was broken out as separate components somewhere in the TC4.x release. It now requires
that the Xvesa, Xprogs, Xlibs, flwm_topside, and wbar extensions are available when booting.
Perhaps intending that there is no tinycore.gz that already contains these and they must be loaded separately, ie a dynamic remaster with those extentions stored/listed appropriately in a second .cpio.gz archive or a regular remaster, if one wants to have the GUI components loaded from the bootloader (without additional fetching).