FYI.
It is suggested to update classic to a newer version. prior to upgrading to ubbthreads..
Classic 6-7-3 is in the members area.
usually as long as classic is in the 6.X series it will work to upgrade to threads.
If your classic is in the 5.X series then you will nee to update it.

Here is a link I found for upgrading classic.

https://www.ubbcentral.com/support/docs/ubbclassic/UBB6_upgrade_within_6.html

Here is a pdf version that a little more readable
https://www.ubbcentral.com/support/docs/ubbclassic/UBB6_upgrade_within_6.pdf

Last edited by Ruben; 09/16/2019 1:59 PM.
Blue Man Group
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