Hi everyone
thanks for all the help and suggestions - what a beast it has been.
the final solution was to install 4.50.8 on a consultant's windows 10 machine, test the reports and confirm the "PL_Options is in use task" is not there - which it was not - so we zipped the 3.71 from the client's serve- uploaded to a sharepoint - downloaded to the windows 10 - and started the migration.
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Douglas Luchansky
ACI Consulting
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