Application crash when using ActiveX control (C++ and C#/.net projects) I've been debugging a crash in an application which appears to stem from the Acrobat Reader ActiveX components, when Acrobat Reader DC 2017 is installed on the computer. The application is a native Windows application written in C++, but I cannot easily create a sample project for it (inherited code base, not my forte), but I'm getting the same error (Structured Exception) from a simple test/repro project made in C#.In this specific crash instance, it appears that the key step is performing any key press operation, within the control, after loading a document. This brings up the special tools in the right-hand side of the viewer's control area.The sample C# repro project can be downloaded here: Dropbox - AcrobatReaderCrash.zip , and the steps to reproduce from it are as follows:Start the application, with or without debugging enabledClick on either of the "Load" buttons, at least once, up to however many you'd likeClick within the viewerPress the "Esc" keyClick the load buttons again,