I have successfully migrated my openerp 7 databases to odoo 8.
I am running odoo from docker using the official docker hub image.
Everything is fine except my customer invoices do not print correctly : I have no header and footer at all (all my company information is basically gone.
I guess this is due to the Qweb reporting scheme so I tried to dig a little into that, modifying the reports.
I followed th odoo guide tutorial at http://odoo.guide/odoo-report-design-basics/ which is not very helpfull as I am continuously stuck in server errors with missing documents (see my stack overflow question on the subject http://stackoverflow.com/questions/32078894/impossible-to-create-a-custom-report-in-odoo-8
I tried to modify the external_layout_header manuall to see what happens with no success again.
I need possible tracks to follow from there, either a simple, no python coding required, documentation to understand why the inital installation does not find out the company header information, or a way to find out what actual document is not found by odoo server when the trace says there is a missing document.
Thanks in advance,
Marvin's answer is unfortunately not the solution. On my "real life system", I have updated the fonts for my company. Preview header/footer on the company page works fine. Just on customer invoices, doing "print-Invoices" does not get the header/footer on the invoices, as if the report structure behind print invoice was not able to get to the RML header. No missing document in that case. Would that be possibly due to RML-QWEB problems in the invoice report? The missing document happens on a sandbox environment I started from scratch and has probably more to do with inconsistent external ids from the report structure I created from scractch following the odoo.guide tutorial..