PyCharm starting process takes more than 1 minute

I've been using PyCharm for a while without any problem on Mac OS X El Capitan. Then I installed also CLion and after starting it, both CLion and PyCharm crashed and I couldn't start them up since that crash. (actually I found out later they've been started but didn't load graphic interface for two minutes)

Then I removed both of them completely from every where I knew (/Library/Caches /Preferences /Application Support /Saved State, ...). And reinstalled PyCharm. Now on my home network starting app process for PyCharm takes more than a minute. Here's part of log I guess caused the problem:

2016-05-30 14:02:30,683 [    185]   INFO - .intellij.util.EnvironmentUtil - LC_CTYPE=en_US.UTF-8
2016-05-30 14:03:32,438 [  61940]   INFO - llij.ide.plugins.PluginManager - Cannot find optional descriptor js-nashorn-support.xml
2016-05-30 14:03:32,546 [  62048]   INFO - llij.ide.plugins.PluginManager - Cannot find optional descriptor uml-java-support.xml
2016-05-30 14:03:32,547 [  62049]   INFO - llij.ide.plugins.PluginManager - Cannot find optional descriptor uml-properties-support.xml
2016-05-30 14:03:32,881 [  62383]   INFO - llij.ide.plugins.PluginManager - 49 plugins initialized in 756 ms

I have no problem on other internet networks.

Any idea how can I fix this?