>Hi all,
>
>I do recall someone having above problem when running with VFP app. I think is Sanjay, has you solve the problem? I'm facing the same problem at my side. Appreciate if you can let me know the status. Thanks.

I have had problems with Quincy also, but from Win95 machines. The problem is not with VFP (IMHO) but with QNC.EXE. I had an app that used NetLib that cause QNC to crash my app. When I disabled Quincy as the automatic debugger in the registry, all worked well. Instructions on disabling are below:

To unload QNC permanently, you have to edit the registry using RegEdit. 
RegEdit.exe is in the Windows directory. 

The section of the registry that starts up QNC is:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AeDebug

There are three parameters:
text (Default) (value not set)
text Auto  "1"
text Debugger "x:\your_dir\qnc.exe -p %ld -e %ld -g"

Setting auto to "0" should shut it off. Removing Debugger  
"x:\your_dir\qnc.exe -p %ld -e %ld -g" would be more permanent.

The following section is used by QNC.EXE:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\control\SessionManager\CheckBadApps\NOTES.EXE

There are four parameters:
text (Default)  (value not set)
text FlagsQNCW.EXE "LN"
text  QNCW.EXE  "1034"
binary VersionQNCW.EXE 00 00 01 00 00 00 00 00

IMHO, I prefer just setting "Auto" to ZERO so it is easier to reset it back to 1 if needed.