This is an open thread. Please add as comments your issues with using Dvorak Assistant in Windows 7.
My experience: I tried using Dvorak Assistant in my home computer running Windows 7 Ultimate, and it showed some issues like error messages and the layout not changing properly. Oddly though, I tried DVAssist on a computer running Windows 7 Enterprise and it works fine without any issue, changing the keyboard layout system-wide as expected.
Note: The second computer did not provide me with any administrative rights (it's a library computer), but my home computer gave me full admin rights.
I request the developer to check for compatibility issues with Windows 7 and update Dvorak Assistant accordingly. It's a great software and will be sorely missed by me if it breaks as newer versions of Windows are released.
Other users, you're welcome and encouraged to add issues and problems you encountered while using DVAssist in Windows 7. Add them as comments on this thread.
I had an issue but now it solved. Thank i will continue using windows 7..