Hi, I did get a crash, but only if I closed the document (Ctrl + F4, or clicking on the X of the document window), no crash with Alt + F4, or exiting excel; this with the code as is.

If I change the lines you mentioned the program just hangs at:

DO while IsWindow(lnExcelWindow) # 0 && Loop while our Excel window alive
ENDDO

that's where the debugger throws me anyway.

VFP 6.0 SP3
Excel 97
Win 95a