Problem Deploying Qt5 Application to a Windows 8 platform

[davethomaspilot]

I've building an application a windows 7 platform using VS2010 with a qt5 plugin.

I deployed to windows 7 tablet machine quite a while ago. The executable and required qt5 dlls are in a directory structure that worked for the windows 7 tablet machine.

I tried copying this directory to the new Windows 8 (tablet) machine.

I had to set QT_QPA_PLATFORM_PLUGIN_PATH to get past the first complaint on the new platform. Now, the application just quits silently, probably due to some missing dependency.

I tried running the old dependency walker in profile mode. I get this message:

Second chance exception 0xE06D7363 (Microsoft C++ Exception) occurred in "KERNELBASE.DLL" at address 0x756DF896.

In static mode, the dependency walker complains about missing API-MS-WIN-CORE- dlls, but I've read that these aren't valid and should be ignored.

I recall very similar symptoms when I deployed to the Windows 7 machine that were solved by installing the VS2010 redistributable package. When I try installing the redist package on the new windows 8 platform, a message says a newer version is already installed.

How do I debug this issue? Do I need the older version of the redist package to run, since those are the dlls I linked the application against? Or, do I need to install qt5 on the target platform instead of just bringing along the dlls that were sufficient for the Windows 7 tablet?

[d_stranz]

The problem might be in the manifest files. We've run into severe headaches with differences in VC redist differences. We've had to manually edit manifest files and ensure the executable uses the redist versions found on the installed machine. Take a look at this. Might hold the solution for you.