Hi Sølvi, Sadly these things happen and they are also sadly difficult to find where it goes wrong, when you have complex documents these things are more likely to happen. Even if I do not know what have gone wrong it is likely that an environment is not properly ended. As an example you might have included one of your child-documents as a title-environment instead of standard-environment. But there are many possibilities.
You know your child documents work. Start a new Master-document and add small pieces from your old master-document to you get the error. I hope it then will be obvious whats wrong. If not try to make a minimal sample (with the error) and post it to the list. I'm going on a holiday now, (to Stavanger by coincidence ;)) but there are many people that can help you on the list. Ingar
