In case anyone else comes across this. E10.0.700.4 and E10.1 both are missing the configuration in the ERPXXXXXXX.sysconfig file.
<MESCustomMenuID value="" />
***<HHCustomMenuID value="xxxxxxxx" />***
<MESImage value = "" />
Add/set that on your client(s) and it will load the MenuID where "xxxxxxxx" is.