QtDesigner Gone Crazy!

**qtoptus** · 25th January 2011, 05:56

Any reason that QT Designer all of a sudden crashes on start up? Everything works fine, Assistant, Linguistic and running a Qt application from Visual Studio work fine.

I tried uninstalling the SDK and re-installing the latest update available 4.7.1 but the problem still exists.

It does not say which files or any information, the crash is simply VS 2008 stupid debug dialog whether I lunched it from within VS or outside.

Any thoughts?

**wysota** · 25th January 2011, 09:21

If Designer crashes on startup then it is most likely because of some invalid widget plugin (or one of its dependencies).

**qtoptus** · 25th January 2011, 16:02

None of my custom plugins installed. It's just a fresh copy of Qt SDK.

Could be corrupted system DLLs? My Windows installation is freaking out? I mean none-Qt specific...but why it's only Qt Designer?

**wysota** · 25th January 2011, 16:27

I still say this has something to do with plugins. QtSDK has some plugins preinstalled. Probably something is in conflict with some system library.

**qtoptus** · 25th January 2011, 23:46

I will try removing a plugin by plugin until the designer runs, then I can locate the dependencies of the problematic plugin.

Otherwise time to format my dirty computer!

**wysota** · 26th January 2011, 00:05

You can rename the plugins folder and see if Designer runs. There is no point in doing excessive work if it's not about plugins after all. But it usually is.

**qtoptus** · 26th January 2011, 02:17

That worked! The problem plug-in busted! phononwidgets.dll

I have no idea what caused that really...could be a system dll. I will keep investigating.

Thanks for assistance.