Hi,

I see you are using the arduino 1.5.x beta. Without asking for more info just yet I am going to take a guess as to the problem...

Please try installing the latest beta from visualmicro.com downloads page to see if that resolves the issue.

If that does not work then please add the location of the arduino ide folder to the START of your PATH environment variable. (control panel>environment variables)

Why Issue?
The problem is probebly that the latest toolchain installed with arduino 1.5.8 does not auto discover the location of the cygwin programs that are located in the arduino ide folder. Normally we see this error when winavr is installed because it adds to the windows path environment var and contains a cygwin.dll in the same folder.


Look forward to hearing how you get on.

Thanks

Hi,

Okay please email your path environment to info [at] visualmicro.com

Also please email your sketch.

Thanks

By the way does the blink example work?

Hi,

Thanks for the files.

The sketch compiles correctly for me. 

It does not appear that the path environment variables was the problem.

I can only assume that this is a permissions issue with the e:\drive or the f:\

Maybe an issue attempting to write to "E:/Users/bjorn.juul/AppData/Local/VMicro/Arduino/Builds/Sketch3/pro_8MHz
atmega328"

You could also try putting this command into a .bat file in a folder such my documents. Then run it from a cmd prompt:-

"F:\Program Files (x86)\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=8000000L -DARDUINO=158 -DARDUINO_AVR_PRO -DARDUINO_ARCH_AVR -I"F:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" -I"F:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\eightanaloginputs"
28\MyClass.cpp" -o
28\MyClass.cpp.o"
 

What does it show after it runs? Can you see a .o file has been created in 
28\MyClass.cpp.o" after it runs?

That's interesting, without using visual micro the tool chain is failing with the same problem (but better error). 

I mentioned the cygwin1.dll earlier. The error means that your pc is finding the wrong cygwin1.dll. This is an annoying change in the arduino toolchain since v1.5.7. 

Visual Micro attempts to compensate by adding the location of the arduino ide to your path while running the compile. But obviously that failed so you manually added the location of the arduino exe folder to your path which forces the cygwin.dll in the arduino folder to be located before any other version. However that has also now failed and we see clearly from the error that this is the problem that the wrong cygwin.dll is being found.

Is is possible you have another environment variable called path? Did you check the user or global environment variable in control panel?

Can you also search your pc for all instances of cygwin.dll. Let's see where they all are?

Thanks

Great thanks for the info. I will try installing those programs to see if I can reproduce.

You would think the user variables take priority over global!