Icon and Version Information is lost by copying to other pc

Hi!

I am facing a strange problem:

My installer (450MB, one file) is equipped with these VIProductVersion and VIAddVersionKey tags and has a custom icon via !define MUI_ICON...

This works all fine as it should on my dev machine.

Now, if I copy the installer to one special other pc, which is of importance to me, this "auxiliary exe information", ie. the icon and the meta-info is lost.
I already tried to delete this iconcache.db file, but this did not lead to any difference.

On other pcs, the described problem does not occur.

Thanks a lot for your kind help in advance!

Best regards,
thegrinch

I have a hunch this is related to a virus scanner trying to scan the entire file, blocking access to the file until it's done, effectively making the OS unable to retrieve icon etc information.

Well,
indeed, there is AVG Free installed on that machine and I have disabled the "resident shield" for the directory I am working in. But this did not make any difference.

windows doesn't show icons for huge files, or at least not immediately. could be the same with the version info.