Thanks Darrel. When you mentioned Microcode Studio I remembered that I have been using Microcode Studio Plus and when I installed the 2.60C I allowed it to install a new copy of Microcode Studio. I never use any of the extra things in the 'plus' version anyway. The icon on the desktop apparently switched over to the newest version. I reverted back to the Plus version and everything works as it should. So, apparently I have some issue with the newest Microcode Studio but at least the older 'Plus' version works OK. I recompiled the code that I was wanting to edit when all this started and the hex file's hash code matched the original. Thanks again for your help!
Mark
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