[PyQt] Fresh Installation on Windows leads to confusing Error

[Phil Thompson]

On 11/09/2014 1:33 pm, Yafes Sahin wrote:
> Hi,
> 
> 
> i was attempting to install:
> 
> PyQt5-5.3.1-gpl-Py3.4-Qt5.3.1-x64.exe
> 
> Eventhough i don't have installed PyQt4 i get the error message
> "A copy of PyQt4 for Python v3.4 is already installed in C:\Python34
> and must be uninstalled first"
> 
> As there is even no folder "C:\Python34" this message is totally 
> confusing.
> 
> 
> What i tried:
> 
> 1) I've installed Python 3.4, tried to install then the exe, but the 
> same error
> 
> 2) Deleted python 2.7
> 
> 3) Deleted all environment variables referencing to python or pyqt
> 
> So what else can i do?
> 
> By the way i am  using as well QT C++.
> 
> 
> The error message is completely miss-leading and non-informative!
> 
> Would be nice, if someone could give me a hint.

It's a registry setting...

Software\PyQt4\3.4\InstallPath

...in either current user or local machine.

Phil