From what I understand, Visual Micro is an extension for MS Visual Studio so that the user can use the VS IDE instead of the Arduino IDE to compile and upload sketches to his board. Here I have a situation where maybe I will have to disable Visual Micro (or perhaps there is another way). Here it is: I use Visual Micro to program my chipKIT board and it works very well. I also want to be able to program other boards, in this case the little ATtiny85 via a programmer board called Sparkfun Tiny Programmer. Fundamentally, the Tiny Programmer is just a USB access to the little ATtiny85 and is very well handled by the Arduino IDE. 
In order for me to use the Tiny Programmer with Visual Micro I assume that I must go to Arduino and change the MicroController to ATtiny85 and request to use the USBtinyISP programmer (according to manufacturer instructions), and according to Visual Micro instructions as well. Then, after testing the Arduino new setup I close Arduino and fire MS Visual Studio Visual Micro. I then must open my Arduino ino project file (in this particular case it is the famous simple QuickBlink.ino). Then I must select my newly installed board in Arduino called ATtiny85. So far it works quite well. Then I attemp to compile the simple project and it appear to compile fine. It is when I try to upload the compiled project that I get an error as such: 

Compiling 'QuickBlink' for 'ATtiny w/ ATtiny85'   Binary sketch size: 834 bytes (used 10% of a 8,192 byte maximum) (0.30 secs) 
Uploading to I/O board using 'COM3'   The uploader returned an error
avrdude: invalid baud rate specified '{upload.speed}'

Now, previously, when I had installed Atmel Studio7, I could upload that sketch no problem. I do not have Studio7 installed anymore. Since Visual Micro is both compatible with MS Visual Studio and Atmel Studio7, am I correct to assume that perhaps if I was trying to somehow disable Visual Micro that I could parameter Visual Studio to do the same job as Studio7 ? Or, is there a solution to the present problem ? 

To better understand the problem with the virtual COM3 port it is relevant to know that the manufacturer of Tiny Programmer is supplying a driver that is not a virtual COM port but rather addresses the USB programmer directly via it's own version of USB driver. In Arduino the IDE imposes the only selection of COM3 as a virtual COM port, but it is irrelevant and does not trigger an error. In Visual Micro it doesn't seem to be the case. Is there a known solution. I'd really like to avoid having to install Atmel Studio again, and certainly not Studio7, since it is incompatible with MS Visual Studio (at least the latest version)
Thanks for your help, very appreciated.

Absolutely, It works now. I changed the settings in /Visual Micro/Programmer to the actual programmer name "USBtinyISP" in Arduino and thing just got perfect. 
Thank you very much for your help!

And, by the way, I'd like to mention that I am impressed by your competence, quick response, and, your patience with beginners like me who sometime asks such basic questions.
Thanks again!

Back in March 2016 I had a problem getting my USBtinyISP programmer working (along with an ATtiny85 Atmel chip). A simple solution was found and I was able to program my ATtiny85 chip using my programmer. Today I have another project using the same chip but Visual Micro will simply not enable the Build&Upload button (just the same problem as previously) except this time I know what to do. As mentionned ...

Tim@Visual Micro wrote on Mar 18^th, 2016 at 3:55pm:
Except now, the solution invoked no longer work. I am really stuck. Cant find why? I did go back to Arduino IDE and reloaded a little sketch successfully. Why, this time, Visual Micro will not Upload my sketch is beyond comprehension for me.  I did check that the USBtinyISP board was properly installed. Obviously it is since it is working with Arduino IDE !
Any suggestions to try ?
Thanks for your help.

One other thing that would help me understand your understanding.

Please tell me what you are clicking in the arduino ide to upload?

Thanks