fixed it by looking for funny things that deviated from
the sameples, and doing various recommended safe things,
and found a few sql errors, and one by one the crashes
went away.
The new wxWidgets just seems less tolerant of little careless
stuff that is not right.
But did not apply the concept to the parameter pack,
event though I applied no end of cleverness to generate
a variant concept, because
visual studio gives meaningless error messages when applying
a variant concept to a parameter pack.
This will probably improve in later or different compilers,
but right now, this feature does not work