[jbennion]

@arspr, you might be on to something here. I have ALSO seen the errors you have mentioned. While I actually don't have those fonts on my Kobo, I note that this is default Kindle font (is it not?), and so it makes me wonder if this is either a Calibre conversion bug or something I could fix in a custom routine when converting MOBI files to EBPUB (with the enhanced driver no longer supported, I am not sending any more KePUBs to my Kobo).

If so, that may also explain the weird path? Maybe it's a Kindle path? Maybe we need a routine or option to strip that out when converting?

UPDATE: I used Sigil to comment that out in the Styles.css section and I am not seeing the problem anymore. I think we've found the problem!