Sorry for reposting, but i have made a mistake, i use VS2012.

Goodevening,
  today i have upgraded arduino sdk from 1.5.6r to 1.5.8.
Before this update i work with your visual studio plugin without problem.
After update i retrive "Error compiling" in any project i load.
In arduino ide the same project are compiled correctly.

What can i do?

Here the verbose output of a blink example

Compiling 'Blink' for 'Arduino Uno'
Build folder: file:///C:/Users/montecchil/AppData/Local/VMicro/Arduino/Builds/Blink/uno
Summary: Header=1 Prototypes=3 Imports=0
Additional Defines: 
Architecture Tools: C:\Program Files\Arduino/hardware/tools/avr/bin/
GCC: 4.8.1
Sketchbook: file:///C:/Users/montecchil/Documents/Arduino
Core Include Paths
Include Path 'C:\Program Files\Arduino\hardware\arduino\avr\cores\arduino'
Include Path 'C:\Program Files\Arduino\hardware\arduino\avr\variants\standard'
"C:\Program Files\Arduino/hardware/tools/avr/bin/avr-g++" -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=158 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -I"C:\Program Files\Arduino\hardware\arduino\avr\cores\arduino" -I"C:\Program Files\Arduino\hardware\arduino\avr\variants\standard" "C:\Users\montecchil\AppData\Local\VMicro\Arduino\Builds\Blink\uno\Blink.cpp" -o "C:\Users\montecchil\AppData\Local\VMicro\Arduino\Builds\Blink\uno\Blink.cpp.o"
Error compiling

Now v1412.10, but the same issue was with 1409

Clean doesn't work, it was my first attempt; 
Also adding arduino.exe path in enviroment vatiable not work.

Yes, verbose output is enabled and the output after clean build is in my fist post.
I send it to the email that you tell me yesterday evening..

Yes I agree but many of us have been using the new toolchain for quite some time.

The issue we found with the new toolchain is that it does not find the cygwin.dll in the arduino.exe folder. This is why Visual Micro was modified to automatically alter the windows path statement when it runs the toolchain processes. This has worked for everyone except you so I am trying to understand the difference.

You can prove this to be the problem by copying the cygwin dlls to the toolchain folder.

Please switch on "tools>options>compiler>show build properties", then clean and then compile and email again.

Also please confirm that you have the same issue with an empty sketch that contains on void setup(){} and void loop(){}

Thanks

Thanks that's clean.

We need to re-visit the path environment variable. Did you add the arduino location C:\Program Files\Arduino to the path then re-start the ide?

If so then please email your full "path" environment variable

Thanks

yes, i add the path to the enviroment then restart visual studio, obviusly

I can't find this file in my path.
I found Visual.Micro.Processing.Sketch.dll last change 09/12/2014 23.23

Visual.Micro.Visual.Studio.Arduino.12.dll 09/12/2014 23.23

Nothing to do.
I removed WinAvr path (both), restart visual studio, but i can't compile

C:\Users\montecchil>"C:\Program Files\Arduino/hardware/tools/avr/bin/avr-g++" -c -g -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=
16000000L -DARDUINO=158 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -I"C:\Program Files\Arduino\hardware\arduino\avr\cores\arduino" -I"C:\Program Files\Arduino\hardware\arduino\avr\variants\standard" "C:\Use
rs\montecchil\AppData\Local\VMicro\Arduino\Builds\Blink\uno\Blink.cpp" -o "C:\Users\montecchil\AppData\Local\VMicro\Arduino\Builds\Blink\uno\Blink.cpp.o"
cygwin warning:
  MS-DOS style path detected: C:\Users\montecchil\AppData\Local\VMicro\Arduino\Builds\Blink\uno\Blink.cpp
  Preferred POSIX equivalent is: .cpp
  CYGWIN environment variable option "nodosfilewarning" turns off this warning.
  Consult the user's guide for more details about POSIX paths:
    http://cygwin.com/cygwin-ug-net/using.html#using-pathnames
avr-g++: error: spawn: No such file or directory

C:\Users\montecchil>

Thanks, yes exactly the error I expect if cygwin can not be located when the toolchain runs

Please put the command in a .bat file and try to understand why it does not work.

"C:\Program Files\Arduino/hardware/tools/avr/bin/avr-g++" -c -g -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=158 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -I"C:\Program Files\Arduino\hardware\arduino\avr\cores\arduino" -I"C:\Program Files\Arduino\hardware\arduino\avr\variants\standard" "C:\Users\montecchil\AppData\Local\VMicro\Arduino\Builds\Blink\uno\Blink.cpp" -o "C:\Users\montecchil\AppData\Local\VMicro\Arduino\Builds\Blink\uno\Blink.cpp.o"

The "CYGWIN environment variable option "nodosfilewarning" turns off this warning." also indicates a similar issue. This is just a wanring that can be ignored but Visual Micro is also setting the envronment variable to prevent this message from happening.

I will also perform some more tests over the next few days but 1.5.8 has been around for some weeks now and there were only two things to make this work for myself and some other testers:-

1) Allow the new g++ to find the cygwin.dll
2) Create a CYGWIN env variable with a value of nodosfilewarning

Thanks

Yes, i found the same article with the gcc error.
Now I solved but i have not undestand how a dll was in toolchain path

Yes, i now.
Buf after this, i have deleted from avr/bin all the dll that was in arduino.exe path and after this the issue is solved.
So, i suppose that the arduino ide upgrade has copy a dll in wrong path, but now i dont know wich of those is

C:\Program Files\Arduino; MUST be in first position of enviroment path (i think because i have winavr installed);

Thanks