Hi! So I experienced a few issues that caused me to not be able to see the (beautiful) artwork that our DM (James) had set in the game canvas and after digging into Google and all sorts of technical troubleshooting docs related to Roll20, Chrome, and Firefox, I came up with nothing. Then I decided to use my professional skillset (programming/web development/software engineering) for the task and came up with some fixes to what I imagine to be common problems. Black canvas (graphics area is black, but all other UI elements render just fine). There is a problem with the HTML5 Canvas element when certain types of lighting are used on various clients. The workaround for this is to disable the #lightingcanvas element (<canvas id="lightingcanvas" ...) by adding "display: none;" (without quotes) to the style attribute in the elements tab of your web console (F12 by default in Chrome and Firefox). Mixed Content warnings and missing visual elements. This is because the Roll20 developers are mixing HTTPS and HTTP locations, specifically with regard to images (who does that in 2016, right?). A temporary "fix" is to set a content exception in Chrome's settings for the domains of the failed content (<a href="http://imgsrv.roll20.net" rel="nofollow">http://imgsrv.roll20.net</a>) or to enter "about:config" in Firefox and set "security.mixed_content.*" to "false", then restart your browser. These settings should be returned to their default values for security purposes after you've exited the game (you'll need to set it manually) As I find more bugs/issues that could cause problems for us, I'll make sure to add them and their solutions to this thread so that we all have an internal reference.