Possible units bugs in new firmware?

[Nigel (UK)]

1. In CAS mode, start with a blank command line. Enter the Units menu and press Const if necessary. Then press - for example 2 (Chemistry) and then 2 (k: 1.3806488e-23). This number is then copied into the command line, but pressing Enter leads to some sort of error. It isn't possible to do any calculation with the number. The error seems to occur with any constant with a negative exponent.

2. In CAS mode, enter (for example) 1_(yd)+2_(in) either directly from the keyboard or using the Units->Units->Length menu to create the unit objects. The calculator gives an error.

3. In CAS mode, MKSA(unit-expression) gives an "Error: Unmatch control word" error message, if MKSA is entered from the Units->Tools menu. However, entering "mksa" (lower case) from the keyboard does not give an error.

These problems only arise in CAS mode (and there may be more - I haven't looked at everything fully yet). Am I doing something silly (entirely possible - it's late here!) or do units no longer work in CAS mode?

Nigel (UK)