QwtPolar or QwtPlot examples do not start

[giusepped]

On Windows Vista, Qt.4.50,
I can compile the libraries and also the examples.
But when I try to run any of the executable examples (e.g. polardemo.exe) I alwasy get:
QtCore4.dll not found.
I also copied this library in the folder bin, but nothing.
What I am missing? Some configuration?
G

[giusepped]

I checked with DepWalker and it happened something I never saw.
After copying all Qtlibs in the qwt-5.2/examples/bin, I get that en entrypoint in QtCore4.dll is missing.
Checking (for example bode.exe) with DepWalker, it says that IESHIMS.DLL is missing!!!??
What happens? Why the same does not happen fot Qt/exmaples?
Regards

[giusepped]

I solved. For some reason, the compilation used another version of Qt libs.
After removing all Makefiles (it seems that doing make clean does not remove all Makefiles) in all subdirs,
and re doing make release, everything worked fine