40tude Dialog - Write access error

40tude Dialog worked fine on my Windows 7 x64 until today: if I run 40tude, this message box appears:

You don't have necessary write access to "C:\Program Files (x86)\40tude Dialog"

We can fix the error if we change the compatibility mode:

1. Right click on the 40tude' shortcut or on dialog.exe
2. Click on Properties
3. Check the Run this program in compatibility mode for checkbox
4. Select Windows XP (Service Pack 3) and click Apply

Now 40tude should run again (in my case this fix worked). We can quit the program and disable the compatibility mode.

Best regards.