Adrian Buza From the support site: "Re-install the whole tree" Now in my dash Is an icon bright So oXygen's easy for me [Yes, that is just a continuation of the first post's spoof. BTW, I got the original lyrics from http://www.kidsongs.com/lyrics/where-oh-where-has-my-little-dog-gone.html.] OK, finally got into the office with enough time to re-install making sure that the "Create symlinks" box was checked, and presto! -- it worked. Thank you. As for fixing the grey icon in the switcher, if it starts to really bother me, I may try the Java 7 bit. But at the moment I'm content to just wait for oXygen 15. (It's not a problem at all when it's the only application represented by a grey question mark icon -- it gets to be a pain only when there are other applications that also are so represented. That hasn't happened to me much.) Thanks again.
When you install Oxygen on Linux (Ubuntu or otherwise) there is a step during the installation wizard that mentions the creation of symlinks. Make sure that this option is enabled because the same option creates the .desktop files from the installation folder.
1) and 2) My guess is you unchecked the option "Create symlinks" (default enabled) during the installation.
3) You could do that, but I would recommend simply reinstalling it in the same folder (you will be prompted to uninstall the current installation) and letting the installer create the symlinks.
4) There are some known issues with the icons in Ubuntu 12 (and Gnome 3 in general). One of the problems is the one you describe with the missing icon. Another issue is that there doesn't seem to be a way to set an icon of an appropriate resolution for the Java application (at least with Java SE 6). Hopefully Java 7 will resolve these problems. We are still testing Oxygen with Java 7 and we will most likely bundle it with v15 of Oxygen. If you'd like, you can install and use Java SE 7 with Oxygen instead of the bundled Java SE 6 from the Oxygen kit. You can rename the 'jre' folder from the Oxygen installation folder and Oxygen will pick up Java from either JAVA_HOME or the PATH environment variable.
Let me know if you need further assistance.