I have a Mazak SL80 with a 11Ta control. After it is turned off for a while it will boot up to the IPL screed and have a "Load File: error" just like in the picture. I have to clear all the memory including the PC parameters and reload the options and the machine will come up and run. It will run untill I turn it off for a day or two and all this will start again. Is this a problem in the Bubble Memory or the Main Board?