On a brand new POA install, with only one test PO in the whole database, I got the same error message after installing POA 8.1A 091029 - "Actual number of vendors found not equal to number stored in the header file. This data may be corrupt". I hadn't changed the vendor code. DIC was clean.

When I went back into the order, the error had disappeared and all seems OK. I chalked it up as a fluke until reading this thread. Now I think there may be some flaw in the service pack that reported this, even though there is no real error.

Steve