Property sheet doesnt show in windows 95 version A

Have written a fairly basic property sheet with 5 property pages on it.
this is being called from a menu which is on a dialog box.

It opens corectly on windows nt4, windows98 and versions 'B' and 'C' of windows95. However it doesnt work on windows95 version 'A', when called it flashes up on the screen and goes again.

any ideas why this is happening?

thanks in advance
A

Most probably some of the controls in your dialogs have 'extended style'. The version of COMCTRL32.DLL which comes with old Win95 versions does not support it.
There is a ASSERT for that situation in MFC code (and a lot of description below it). Try debug version on a computer with the problem. To solve the problem you should remove the exetended styles form the dialogs or ship COMCTRL32.DLL with your project (i'm not sure how legal this is).