Unable to integrate Qwt-6.1.0-rc3 in Qt Creator 2.6.3 (Qt 5.0.1 mingw32)

[DerVerbrecher]

Hi Uwe,

thank you for your response. I really appreciate it. In my first try to install qwt I did not change the qwtconfig.pri. So the configuration was debug_and_release.
I fully understand the problems with DEBUG & RELEASE builds.

Again, the error under "Tools->Form Editor->About Qt designer plugins..." was the following with the "debug_and_release" configuration:

"Cannot load library C:/Qwt-6.1.0-rc3/plugins/designer/qwt_designer_plugin.dll: Die angegebene Prozedur wurde nicht gefunden"

Am I missing something in qt.conf? It seems that the designer plugin is not able to find another required DLL or lib.

Here is my qt.conf again:
[Paths]
Libraries=../lib/qtcreator
Plugins=C:/Qwt-6.1.0-rc3/plugins
Headers=C:/Qwt-6.1.0-rc3/include
Documentation=C:/Qwt-6.1.0-rc3/doc
Libraries=C:/Qwt-6.1.0-rc3/lib

Thanks in advance!

[Uwe]

Probably you forgot to add C:/Qwt-6.1.0-rc3/lib to your PATH.

Uwe