[Interest] Failed to start Assistant, Designer...

Thiago Macieira thiago.macieira at intel.com
Thu Jul 9 07:23:20 CEST 2015

On Wednesday 08 July 2015 21:48:41 Igor Mironchik wrote:
> Hi guys,
> I freshly install Qt 5.5.0 with online installer on Kubuntu 15.04 in the
> release day. But today I needed to launch Assistant, and it crashes...
> Here is the output of Assistant:
> Konsole output
> igor at gmi:~/Qt/5.5/gcc_64/bin$ ./assistant
> kf5.kiconthemes: "Theme tree: (Breeze)"
> Cannot mix incompatible Qt library (version 0x50401) with this library
> (version
> 0x50500)
> Aborted (core dumped)
> I'm new with Linux... How can I fix it?

You're mixing two different versions of Qt libraries and the privates have 

Get the stack trace from that core and post here. The QObject or QWidget 
protected constructor was called from a derived class from a different build. 
The frame above that constructor will point to the library or plugin that is 

Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center

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