I installed skype using several process in my newly installed Ubuntu 14. 04 64 bit... it shows a skype icon in dash... but when I click on it, nothings happens. What can I do?

I tried almost everything found in net. Every time it installed quite normally and found skype icon in dash. But not opening, when I click on it.

I downloaded skype 4.2 version from their website and installed using software centre and also tried installing via command line. But still not working.

When I tried to run skype using terminal it produce following output--

```
skype: symbol lookup error: /usr/lib/i386-linux-gnu/libQtOpenGL.so.4: undefined symbol: _ZNK14QWidgetPrivate17hasHeightForWidthEv

```