The following error will be displayed when attempting to create a new records through the Create Opportunity & Quote page:

Prior to version 1.41, all cross-object fields to a field on Account from Quote need to be removed from the Quote Field Set included in the package.

Starting with version 1.41, the fields causing issue will no longer be rendered on the page.

Cross-object fields cannot be supported because neither the Opportunity nor Quote records are inserted when on the Create Opportunity & Quote page, and therefore the relationships required to connect to other objects (like Account) are not available.