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    Bug 
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    Resolution: Done
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    P1: Critical 
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    Qt Creator 4.12.0
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    None
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    macOS 10.15.4
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        fe1d75894375c32cdaad9b9a3b98c5d1180e78af (qt-creator/qt-creator/4.12)
I just updated from QtCreator 4.8 to 4.12.
Now QtCreator crashes on startup. When restarting, it shows the following error:
It looks like Qt Creator closed because of a problem with the "CppTools" plugin.
If I disable the suggested plugins, QtCreator starts, but I cannot open my projects.
- is duplicated by
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                    QTCREATORBUG-23970 plugins depending on CppTools need to be disabled to start Qt-Creator -           
- Closed
 
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                    QTCREATORBUG-24033 QtCreator 4.12 crashes at startup -           
- Closed
 
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                    QTCREATORBUG-24042 [Mac] Crash on start-up loading CppTools plugin -           
- Closed
 
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- replaces
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                    QTCREATORBUG-23966 Qt Creator crashes due to CppTools plugin problem -           
- Closed
 
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| For Gerrit Dashboard: QTCREATORBUG-23916 | ||||||
|---|---|---|---|---|---|---|
| # | Subject | Branch | Project | Status | CR | V | 
| 299230,2 | CppTools: Fix crash when loading pre 4.11 settings | 4.12 | qt-creator/qt-creator | Status: MERGED | +2 | 0 |