Hi jckinnick and jacob_seal,
I opened a support ticket and the guy helping me was kind enough to attach monkey/drivers/firmware to the ticket, (since for me the page was broken for the software and monkey couldnt download it), I was then able to download and install software (not through monkey but through the attached files in the support ticket), maybe if you have a ticket open you can suggest it, if your unable to download from line6 site? jcknnick, Im not sure about the 'failure to launch installer', maybe you can get driver from support ticket? hope this helps :-)