Bob - this is with a brand new out-of-the box DM41X. The only modules are LIB4 and HEPAX, which is in page 6 BTW.
HEPAX_8H seems to be a RAM page short, as it only shows 1957 free registers in HEPAX Memory.
after removing HEPAX_8H and plugging _4H (or 1G, btw), HEPDIR shows 0 and 'NAME TYPE REGS' in alpha.
Ahh cleared page 11 with "OK" 11 CLRAM, which locked up the calculator.
After a reset, and a unplug/plug of the _8H, I have 2610 regs in the FS!
One problem solved
Though the freeze perhaps shouldn't happen?