Not sure if it's a serious problem or not, will investigate a bit more but would appreciate any input.

I turned on Zetz a couple of days ago, and was confronted with Err 4, and had to perform a full reset to clear it. I thought I may have caused this error by my actions - I turned off the machine during a Pharaoh Rush, and left it off for about 4 days. I then turned it back on and got this error.

I then played it for about 30 mins and turned it off, not in a bonus or anything. I went back to it two days later (today) and turn it on - Err 4 again!

What would be causing these errors? The machine seems 100% functional once the errors are cleared?!