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My XP program not working on Vista (500 points)

I only have XP.  I have been told that my program is not running on Vista, although there are no problems with XP:

"I downloaded the free version to try before I buy and I continually receive an error message when I try to open the program after installation. I'm using Vista home version and I'm wondering if there is a compatibility issue."

Can anyone tell me the reason for this.  Could it be that I am using:

1.  Delphi 6.
2.  Pre-vista components.
3.  Pre-vista version of "ASProtect" to encrypt the source code.
4.  Pre-vista version of QSetup to create the installation program.
5.  Something else....

I am giving 500 points (and my grateful thanks) for this as it is urgent.
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rincewind666
Asked:
rincewind666
1 Solution
 
shiyunchiCommented:
Try using Delphi 2007.
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schild1Commented:
I had same problem with my D2006 program. Try to set compatibility option for your program on Vista (right click on program in explorer, Compatibility tab):
1 - Run this program in compatibility mode for: WinXP SP2
2 - Run this program as administrator.

That works to me.
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rdytmireCommented:
What is the exact error you are receiving from vista?  Is it a pointer error or a security type error?  Delphi 6 apps really should work just fine but it could be that the application is trying to utilize a resource or API call that is now more restricted.
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House_of_DexterCommented:
Are you making any calls into IE, if you are doing something IE7 doesn't allow...your out of luck...Also check out this link on running in compatiblity mode in Vista
http://windowshelp.microsoft.com/Windows/en-US/help/bf416877-c83f-4476-a3da-8ec98dcf5f101033.mspx
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rincewind666Author Commented:
Many thanks for your help.

Note to others who may be searching for this solution:
I cannot check this solution as (as I said) I do not have Vista.  However, it sounds right and I shall suggest the users of my software to do this in the meantime.
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