SOLVED: Crash W2K with transparent pane

Has anyone noticed a problem with a floating pane  where the opacity is reduced, under Windows 2K only?

I have some small floating Panes, only use one at a time.   Options.FloatingFrameOpacity  = 150

This works OK on my PCs and for most of my users.  But one user reports that each time they close one of these "transparent" Panes, their PC crashes and reboots -- this PC is running Windows 2K SP2.  Everything else about my app seems to work OK on this PC, it is just the floating Pane with Opacity set  = 150.  The transparent Pane displays OK, but when the user closes it, PC crashes.

Any suggestions as to what I can try?  (eg. set Opacity = 255 before destroying Pane?)

Is anybody using Win 2K with Panes transparent with no problem?

SOLUTION: The transparent Panes feature must NOT be used with Win2000.  I have now used the Win API function GetVersionEx to check for version of Windows, and if less than 5.1 (WinXP) do not use transparency. 

Thanks. I think this is the reason for PC crashing and rebooting.

I have put a test in my software so if OS version is less than WinXP do not use the transparent feature of floating Pane. Hope this solves problem.

(It would be good idea if CodeJock could put this test into anywhere that transparency could give problems like this    )