We don't support programs not provided by the tinycore repos.
You can use ezremaster.
Another option is to use an nfs share as a tce directory.
/tmp/tce/tz is not a valid core directory.
Use a vmware virtual disk, put your tce directory there, and "tce-load -iw Xvesa Xprogs flwm_topside wbar" after booting.