I also can't figure out where to locate the logs through the browse section under attachments. I find them in the log section of Malwarebytes' Anti-Malware but I can't attach from there.
find the log you want in malwarebytes and open it....
then in top left corner...click file...and save as....save it on your desktop
now go back and browse to your desktop....
I was then suppose to download OTL but I got a popup saying it can't download from a temporary folder.
??? can you attach a screenshot of this popup