I think maybe I found the problem, and it was a simple fix. Going over the code for my merged order.php file, I found the first line of code that called Taxcloud was as follows:
Code:
require_once DIR_WS_MODULES . 'TaxCloud/func.taxcloud.php';
This was the coding for the taxcloud version compatible with ZC v1.5.5. I had noticed that many files in 1.5.6 had been refactored to include DIR_FS_CATALOG, kso I added that in as follows:
Code:
require_once DIR_FS_CATALOG . DIR_WS_MODULES . 'TaxCloud/func.taxcloud.php';
This seems to have worked. I can now access the admin>customers>orders page without the 500 error. The all the other functions appear to be accessible as well. After I complete a little more configuration and do some testing, I will report back here update on whether or not everything is actually operating properly. Thank you for all your help.
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