Hi Nicholas,


On 04/26/2018 07:34 PM, Bastien wrote:
> Hi Charles,
>
> Charles Millar <millarc@verizon.net> writes:
>
>> Attached --debug-init when starting -
> is this with emacs -Q?  If not, can you bisect your configuration?
>
> Thanks,
emacs -Q starts fine.

The problem may be with

require 'ox-XXXXXXX

When I worked my way down to (require 'ox-texinfo) there was no problem. 
When I uncomment that line the startup error appeared.

In the warnings buffer part of the message is

error: Invalid byte opcode: op=183, ptr=31

As I mentioned earlier, very poorly, when I start emacs 27.0.50 with the 
same OS, org versio and .emacs file, I have no problem

Charlie