I am maintaining a VS2008 C# WinForms app which uses Nevron Chart 2009.1 (v9.7.1.12). I've received a new dev machine running Win7 32-bit; previously I was using XP. After reinstalling all my dev tools I have noticed that the chart control is not fully functional when the app is recompiled under Win7. All was well under XP and no code mods have been made. I suspect it may be something to do with licensing and/or Win7 user permissions, as I found I had to run the License Key Manager as administrator in order to install my license key (otherwise I got an exception when I hit Save).

At runtime, the chart is rendered and my data is plotted OK but when the app tries to change the chart's BoundsMode or Projection property in response to a button click, nothing happens. In particular, it does not change to a 3D view when the projection is set to PerspectiveTilted. I can step through the code in the debugger and no exception is generated. It's as if the code has simply not been executed. Running VS and/or the app as administrator makes no difference.

I can't find anything in the KB about Win7-specific issues.

What am I missing?

Fixed! I installed the Q2 2008 version 8.10.15.12 side by side with 2009.1 (using the same license key), referenced the 2008 dlls instead, and recompiled. The chart now works correctly. If I switch back to 2009.1 and recompile, it stops working again.

So it's due to a change between these two versions. I'll understand if you decide not to investigate a bug in a 4-year-old version of one of your products.

Anyway, my problem is solved (well, worked around) for the time being.