QtIOCompressor 2.3 solution doesn't work as dynamic library when built for windows mobile 5

QtIOSolution in version 2.3 works without any problem when built in linux, windows using mingw and windows using msvc 2008
when its built for windows mobile 5 as library then application which uses this dll will not run, it always complains that either it is not signed with a trusted certificate, or one of its components cannot be found
when this solution is linked to project statically it works as expected, but it violates LGPL

i used these steps to build library
set PATH=D:\QT\ppc\4.5.3\bin;%PATH%
call ..\..\bin\setcepaths wincewm50pocket-msvc2008
configure -library
qmake
nmake

i am sure that there is no needed dll missing on device or emulator (coredll.dll is always there, qtcored4.dll is copied next to exe)

to try this behaviour you may use any project from examples, only add this function to main.cpp

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPWSTR lpCmdLine, int nCmdShow)
{
return main();
}