If you have recently installed GroupMail or other new software on a Windows XP SP2 computer, and find that it crashes or fails to launch; it could be related to Windows DEP (Data Execution Prevention) for XP SP2.

Thankfully, we have not had too many people contact us about GroupMail free email newsletter and marketing software crashing on Windows XP, but if your GroupMail (or other software) crashes unexpectedly (usually showing a stakhash or appcrash error) it could be that Windows DEP (Data Execution Prevention) on XP SP2 is causing the problem.

The easiest way to find out if your Windows DEP XP SP2 settings are causing the problem is to disable DEP from running for a particular program.

Here are the instructions to disable DEP for XP SP2

1. Turn your computer on and click the Start button
2. Select Control Panel
3. On the System icon
4. Click the Advanced tab
5. Select Settings in the Performance section
6. Click the Data Execute tab in the dialog box
7. Select Turn on DEP for all programs and services except for those I select
8. Click Add
9. Browse for the program that you want to add (the one that is crashing.)
10. Click Open
11. Click Apply
12. Click OK
13. Close all programs and reboot your computer

* Only disable DEP for the program that is crashing, NOT for the whole system!

Then, try to open the program again. Does it still crash?

If so, at least you know it is not because of your Windows DEP settings in XP SP2.

If you are having similar problems in Windows 7 or Vista, here are instructions for disabling DEP in Windows 7 and Vista.

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Did you know that GroupMail is used by awesome people in over 160 countries around the world? Apparently, we are HUGE in Hong Kong!

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