DXKeeper 16.1.5 upgrade then failure to open database


hi folks:
I upgraded to version 16.1.5 today, and when I started it, I got a window saying it was "EXPANDING QSO MODE FIELD WIDTH TO 12"
Then I got the error message

Existing fields were not successfully updated due to an error noted in the errorlog.txt file; the specified log cannot be opened

In error log.txt, I see

program error 3035 in module DXLogModule.UpdateFields, theState = 105, UpdateFields = 4, SaveUpdateFields = : System resource exceeded.

Any suggestions?
thanks, 73

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