Hi, we have tested the latest wine version ourself with KDE and its very unlikely that the problem is related to that. As the bubble ball demo works as expected it is definitely no problem with embedding the window into the browser, and the rest should basically be independent of the used desktop environment. We also had a user yesterday on IRC, for which the Chrome UA Spoofer didn't work anymore, but I wasn't able to confirm this myself yet, and at least my old version still seems to work as expected. Can you please check with http://fds-team.de/pipelight/ if the user agent string is the problem and which Silverlight version do you see there. You should see: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20120427 Firefox/15.0a1 and Silverlight version 5.1.20513.0. As a workaround you can try to set the user agent via commandline (close all other browser windows first): chromium-browser --user-agent="Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20120427 Firefox/15.0a1" If this is not the issue: Did you modify anything manually in the previous pipelight configuration file (e.g. disable GPU acceleration, ...)? As the paths have changed in pipelight 0.2.0 with the introduction of multiplugin-support all these changes are not used anymore. Sebastian 2013/10/18 Summer Rae