The required order of installation is Quik Reports first, then Quik Invoice Plus. The reason for this is due to what you are running into; linking. If you installed Quik Reports last, or reinstalled Quik Reports for any reason, you would have to reinstall Quik Invoice and any other 3rd Party products (ie other products not from Accpac International).

Once you reinstall Quik Invoice Plus, you should see your History headers/details link correctly. As an aside, when this is working, the correct link setup for these two files is to have the details (QIHISTDR) drive the report, and link to the header (QIHISTHR) by the customer/document field.

Regards,
Softrak Support

[ps. what makes you think it's a 'sir'... ]