Dynamsoft TWAIN Products

We moved our development envioronment (VS2008 SP1 using VB.NET) from an XP Pro machine to a new machine with Windows Vista business. After adding a COM reference (Dynamic TWAIN 4.1...) and adding 'Dynamic Twain Class' from the COM Components in the Choose Toolbox Items dialogue we get the following error whe we try to load the form with the Twain scanner control:

TargetInvocation Exception was unhandled.
Unable to get window handle for the 'AxDynamicTwain' control. Windowless ActiveX controls are not supported.

We can see the scanner icon in the tool box, but when we drag it into a form it shows up like an empty square and when you click elswhere in the form it disappears.

Any suggestions?
Thankyou

The cause of the problem is that the program is closed by DEP(Data Execution Prevention).

The following resolutions can be applied to disable DEP:

Resolution 1:

1. Run Command Prompt as administrator.
2. In the command prompt, type bcdedit.exe /set {current} nx AlwaysOff and press Enter.
3. You should get a success message back.
4. Close the command prompt.
5. Restart the computer to apply.

Resolution 2:

1. Run Command Prompt as administrator.
2. Call "$(DevEnvDir)..\VC\vcvarsall.bat" x86.
3. Type editbin /NXCOMPAT:NO $(TargetPath) and press Enter.
4. Close the command prompt.
5. Restart the computer to apply.

Thanks.