#17 invalid matrix with matrix display

[BackwardsDown]

After adding a matrix display to the worksheet it sais:
ERROR: invalid matrix!!!
ERROR: invalid matrix!!!

And after adding some fixed voltages and ground elements to the display led it crashes, the matrix A gets outputted on the terminal. (attached).

[BackwardsDown]

terminal output

[Zoltan P]

Basically this is bug in the matrix solver in ktechlab. For some special cases it fails an internal consistency check and aborts.