Quote Originally Posted by linuxguy2 View Post
There is an incompatibility between the two mods.

Tested both mods separately and they worked as advertised. Then tested on 2 different installations reversing the order of installing EP4 & export-shipping and EP4 fails on both installs.

My CSV file is solid as I have uploaded & installed it on a site without
"export_shipping_information_V1.3.2.1" installed and it works.

EP4 is a self installer and I don't know exactly which tables/rows/columns it modifies in the DB when you install it. If I had the raw *.sql file I might could figure something out.
My guess, and I'll take a look, is that export shipping installs a file that is loaded in after something associated with EP4 and therefore a variable needed by EP4 is overwritten feeding something incorrect to EP4. The fact that it sounds like the install occurs without error (review logs) and that the export continues to work that the autoinsall is not a problem, but there is a conflict in variable usage. Again, will take a look at this, though maybe a needle in a haystack dependingon what it is.