I've been told by Mitel (and the HTML Toolkit documentation) that both Branding and Screensaver HTML apps for the phones don't require the HTML license, and that this was brought in at release 4.0.
However, when I upload a branding application to my 4.2 3300 (no SP), it won't show up to be assigned to a device unless the HTML Infrastructure license is enabled on that extension. I can set it on one (with the free leeway license) and it works fine, but then I get an error on any other phones, saying 'Number of HTML Infrastructure licenses exceeded'.
Am I being told porkies and I do need a license on <5.0 systems? If not, what else could it be?