Months ago,I installed pycharm 4.5 in Ubuntu(by run /bin/pycharm.sh),it works well. Now I found 5.0 version is released.I download the .tar.gz file and unzip it.Then I want to install it in the same way. But a matter is ,although it runs well, in launcher I found the icon of Pycharm becomes a big "?".Also,in terminal,it gives some warn:
log4j:warn no appenders could be found for logger (io.netty.util.internal.logging.internalloggerfactory). log4j:warn please initialize the log4j system properly.
What that mean?and is it the right way to install Pycharm?