Have you noticed the following HP-12C bug:
Clearing statistical registers CLEAR Sigma in program prevents the "running" message.
For example run the following program
01 CLEAR Sigma
02 GTO 01
and compare to
01 CLEAR FIN
02 GTO 01
This is not a serious bug but a bug anyway I guess.
My HP-12C is year 2003 model (Made in China). Is it the same thing with earlier 12C calculators?