HI 
I INSTALLED WIN8.1 AND SONAR X3D + V-STUDIO700 LATEST DRIVER WHICH IS 2.0.2. EVERY THING IS FINE EXPECT OF MASTER FADER ON MY V-STUDIO 700 WHICH WORKS SPORADICALLY.  I HAVE TO CLOSE AND RE OPEN THE PROJECT SEVERAL TIMES THAT THE MASTER FADER ON MY V-STUDIO CONSOLE JUMPS TO THE RIGHT POSSESSION OTHERWISE IT STAYS IN MINIMUM ON THE CONSOLE. I NEVER HAD THIS PROBLEM WITH WINDOWS 7. IT CAME RIGHT AFTER INSTALLING WIN 8.1. I KNOW SOME OF THE USERS HERE HAVE THE SAME PROBLEM. I HOPE SOME ONE CAN HELP US TO FIX THE ISSUE. I ALREADY EMAILED TO ROLAND AND CAKEWALK BUT NO ANSWER YET. 

I have exactly the same Problem.
It must be a problem with the vs700 Driver for Windows 8.1.
There is yet another thread for this problem in this forum.
I have no workaround.

Ring up Roland!

Hi REZA, As you know I have the same problem as you about the master fader. This is randomly if the master fader operates in accordance with the Sonar fader or not. There are two days I was working on a new project that the master fader did not want to cooperate. I leave it like that and do not worries me. Wanting to add the drum (Addictive Drum) I plug my midi controller (Roland A-800 Pro) in usb . Sonar asks me if I want to add the controller. I said yes. I go into the options ticked the boxes in the options MIDI devices. I click apply and Bang the master fader goes to zero and is now synchronized with Sonar the master fader. I do not know if your side it does something? Thanks.

gabrielmesservier
Hi REZA, As you know I have the same problem as you about the master fader. This is randomly if the master fader operates in accordance with the Sonar fader or not. There are two days I was working on a new project that the master fader did not want to cooperate. I leave it like that and do not worries me. Wanting to add the drum (Addictive Drum) I plug my midi controller (Roland A-800 Pro) in usb . Sonar asks me if I want to add the controller. I said yes. I go into the options ticked the boxes in the options MIDI devices. I click apply and Bang the master fader goes to zero and is now synchronized with Sonar the master fader. I do not know if your side it does something? Thanks.

HI GABRIEL
I do have the novation SL MK II . I have not tried it yet but i do have another experience, I added another v-studio 700 on top of the old one in the add,remove controller  , i mean having 2 v-studio 700 as a controller, and realized master fader works fine but any time i load a project all the faders don't  jump to their possession smoothly, I think its because sonar send the commands 2 times and console receive them twice.but thanks for sharing your experience with me.

I emailed Roland US , they replied and asked me to email Roland Canada, which I did and no respond till now.
I emailed to cakewalk and reported the issue and they replied I should call to one of their agent for technical issue, they said it must be something wrong in my setup. I called cakewalk and chose the number belong to cakewalk hardware and it transferred me to Roland us, a guy picked up the phone and even didn't let me to talk and said, you are calling from Canada and asked me to call Roland Canada. I called Roland Canada and they said there is no agent at this moment to help me and asked me to call next week. Last chance was calling to cakewalk directly which I did and the polite agent tried to reproduce the problem and he said, YES he has the same problem and said because the problem is not from their end I have to call Roland and report the issue. This the whole story and it made me so upset, Because non of the companies want to be responsible for the issue.
It would be great if any of us who has the same problem, just report the issue. It might work and force them to fix it. I know most of us don't really care about master fader, because of using the main volume but we pay for the programs and tools to get the proper customer service and troubleshooting. :)
 

Just send Brandon from Roland a PM.

CakeAlexS
Just send Brandon from Roland a PM.

How should i do that? you mean email him? do you have his info?

Sorry I should have written that I just sent a message to Brandon myself. 'Send' should have been 'sent'. Sorry was a typo.

CakeAlexS
Sorry I should have written that I just sent a message to Brandon myself. 'Send' should have been 'sent'. Sorry was a typo.

Oh really thanks for taking care of it. I don't know how to appreciate it. Thank you so much Alex.