[GNC] Crash at Scheduled Mortgage and Loan Repayment setup

[Mike Commissaris]

New release install of 3.4 under Windows 10, obtained by following
recent link in this forum. To set up a scheduled mortgage payment -
entered amounts, interest, accounts, loan length, remaining etc,  I
progress as far as loan repayment in the setup and click OK. GNU seems
to be calculating results then it crashes/quits.

gnucash.trace shows:
* 17:54:26  WARN <gnc.app-utils> Could not spawn perl: Failed to
execute child process (No such file or directory)

Did not think that Perl would be required for a Windows program, but
installed Strawberry Perl anyway and retried.

gnucash.trace then output:
* 20:58:06  WARN <gnc.core-utils> Could not kill child process: Access
is denied.

Looks to me like something other than lack of Perl is going on. Any help?