My Dymo Labelwriter 330 will not print more than one label at a time. - Knowledgebase / Software / Labeler / Version 6 - Wasp Helpdesk
Labeler v5 (and later versions) have a check box in the Tools > Options dialog, which allows you to tell Labeler that the "Printer does not support multiple copies." When this option is enabled, Labeler will manage the printer directly, sending multiple "one-page" print jobs to the printer, instead of a single, multi-page job.