I 've got today the following message, when I've tried to compile a dll that compiled fine before any change:

“LINK : fatal error LNK1561: entry point must be defined”

During my investigations for resolution, I've tried several tests that all failed:

In some cases, for example when changing user calculation preferences like the Delta Split, it is necessary to close the portfolio windows in order to take into account the modifications. Closing specific portfolio windows in Sophis Risque and Value is possible using the Windows SDK, MFC and the low level toolkit.

Fine, you just wanted to use a x64 OS, because you need to make a lot of calculations for financial softwares, make videos, to play or whatever else. You just forget that most of current applications are still in x86, with plugins in Explorer, providing right-click menu items, which, infortunately, won't appear in the x64 explorer, because the plugin is a dll which was x86 built and cannot be loaded by the x64 explorer...