Makefile Fehler bei Atmel Studio mit Arduino

Hallo,

Ich habe vor einiger Zeit ein Atmel Studio Projekt mit Arduino erstellt.
Das hat auch funktioniert. Jetzt habe ich versucht das Projekt auf einem 
anderen PC zu öffnen jedoch bekomme ich einen Makefile Fehler:

make: *** No rule to make target 
'C:/Users/Bfm2Fe/Desktop/Men├╝/ArduinoSketch1/ArduinoSketch1/ArduinoCore 
/Debug/libArduinoCore.a',  needed by 'sketch_apr09a.elf'.  Stop.

Kann mir jemand sagen, was das zu bedeuten hat und wie ich den fehler 
beheben kann?

Viele Grüße
Max

------ Build started: Project: ArduinoCore, Configuration: Debug AVR 
------
Build started.
Project "ArduinoCore.cppproj" (default targets):
Target "PreBuildEvent" skipped, due to false condition; 
('$(PreBuildEvent)'!='') was evaluated as (''!='').
Target "CoreBuild" in file "C:\Program Files 
(x86)\Atmel\Studio\7.0\Vs\Compiler.targets" from project 
"C:\Users\Bfm2Fe\Desktop\Menü\ArduinoSketch1\ArduinoSketch1\ArduinoCore\ 
ArduinoCore.cppproj"  (target "Build" depends on it):
  Using "RunCompilerTask" task from assembly "C:\Program Files 
(x86)\Atmel\Studio\7.0\Extensions\Application\AvrGCC.dll".
  Task "RunCompilerTask"
    Shell Utils Path C:\Program Files (x86)\Atmel\Studio\7.0\shellUtils
    C:\Program Files (x86)\Atmel\Studio\7.0\shellUtils\make.exe all 
--jobs --output-sync
    make: Nothing to be done for 'all'.
  Done executing task "RunCompilerTask".
  Using "RunOutputFileVerifyTask" task from assembly "C:\Program Files 
(x86)\Atmel\Studio\7.0\Extensions\Application\AvrGCC.dll".
  Task "RunOutputFileVerifyTask"
  Done executing task "RunOutputFileVerifyTask".
Done building target "CoreBuild" in project "ArduinoCore.cppproj".
Target "PostBuildEvent" skipped, due to false condition; 
('$(PostBuildEvent)' != '') was evaluated as ('' != '').
Target "Build" in file "C:\Program Files 
(x86)\Atmel\Studio\7.0\Vs\Avr.common.targets" from project 
"C:\Users\Bfm2Fe\Desktop\Menü\ArduinoSketch1\ArduinoSketch1\ArduinoCore\ 
ArduinoCore.cppproj"  (entry point):
Done building target "Build" in project "ArduinoCore.cppproj".
Done building project "ArduinoCore.cppproj".

Build succeeded.
------ Build started: Project: sketch_apr09a, Configuration: Debug AVR 
------
Build started.
Project "sketch_apr09a.cppproj" (default targets):
Target "PreBuildEvent" skipped, due to false condition; 
('$(PreBuildEvent)'!='') was evaluated as (''!='').
Target "CoreBuild" in file "C:\Program Files 
(x86)\Atmel\Studio\7.0\Vs\Compiler.targets" from project 
"C:\Users\Bfm2Fe\Desktop\Menü\ArduinoSketch1\ArduinoSketch1\sketch_apr09 
a\sketch_apr09a.cppproj"  (target "Build" depends on it):
  Using "RunCompilerTask" task from assembly "C:\Program Files 
(x86)\Atmel\Studio\7.0\Extensions\Application\AvrGCC.dll".
  Task "RunCompilerTask"
    Shell Utils Path C:\Program Files (x86)\Atmel\Studio\7.0\shellUtils
    C:\Program Files (x86)\Atmel\Studio\7.0\shellUtils\make.exe all 
--jobs --output-sync
    make: *** No rule to make target 
'C:/Users/Bfm2Fe/Desktop/Men├╝/ArduinoSketch1/ArduinoSketch1/ArduinoCore 
/Debug/libArduinoCore.a',  needed by 'sketch_apr09a.elf'.  Stop.
  Done executing task "RunCompilerTask" -- FAILED.
Done building target "CoreBuild" in project "sketch_apr09a.cppproj" -- 
FAILED.
Done building project "sketch_apr09a.cppproj" -- FAILED.

Build FAILED.
========== Build: 1 succeeded or up-to-date, 1 failed, 0 skipped 
==========