After upgrading to version 3.5.1 something has stopped working. In the initial installation I used a slightly modified version of the Protostar template and that is of course lost after upgrading. Something I can live with for the moment.
Even if I select standard Protostar as default template the page is not shown correctly. Everything is left oriented and modules and content stacked on top of each other; starting with banner module and then position 8, content and position 7.
It seems like the template is not recognized and I've not been able to figure out what is wrong. So, I'm in need of some guidance.